Agriscience test
What is the median of this set? 2,4,6
4
An example of an applied science is
Animal science
Which of the following is an ethical practice when working with animal subjects?
None of the answers are correct
Which of these would be called results?
Number of fruit flies
A hypothesis must be:
Testable
Adult stem cells are ________, while ________ stem cells are ________.
pluripotent, embryonic, totipotent
Agriscience
using new technologies in the production of food, fiber and shelter
Which of the following sets of key terms would be used to locate relevant articles for a student doing research on protein synthesis?
Amino acids, transcription, mRNA
Which of the following is NOT a curdling agent used to make cheese?
Amylase
What is the best source of information used in scientific research?
An article published in a peer-reviewed science journal.
The scientific inquiry process is based on what?
An incremental approach to truth.
The step in the scientific method that discusses whether a hypothesis was supported or refuted; describes any errors, best refers to....
Analysis
Which act allows individuals and companys to hold patents for genetically engineered animals?
Animal Patent Act
Researchers who conduct ___________ seek to resolve a specific question with the results being used immediately to identify solutions.
Applied Research
Which of the following should not be included in the conclusion of a scientific paper?
Background on the topic
Researchers who conduct ________ attempt to answer scientific questions without having an immediate use for the answer.
Basic Research
Where should someone dispose of contaminated plastic ware?
Biohazard bag
The study and manipulation of living things or their component molecules, cells, tissues, or organs.
Biotechnology
Which division of Agriscience is the use of cells or components of cells to produce products and processes?
Biotechnology
Hypotheses may arise from....?
Both Answer 2 and Answer 3 are correct
A biology class wanted to develop a research project to predict the effects of a new highway on wildflower species found in the Piedmont region of Virginia. The class could best conduct such a study by sampling flowers found in the highway construction area —
Both before and after construction is completed
The work of scientists usually begins with....?
Careful Observations
An example of a basic science is
Chemistry
In 1869, DNA was discovered within the nuclei of cells. By the 1940s, scientists knew that chromosomes were made of both DNA and protein but did not know which was the genetic material of cells. In the 1950s, scientists demonstrated that DNA is the material responsible for heredity. In 1953, using information collected by other scientists, an American biologist and an English physicist built a three-dimensional model of DNA. These discoveries best illustrate the importance of —
Collaborative efforts among scientists
Which step of the scientific method includes observing what takes place and recording what you measure or observe?
Collect the Data
____________ is any one of several procedures for transmitting information from one person to another. Writing reports, or participating in discussions in class are examples of this.
Communicating
The step in the scientific method that discusses whether the problem was answered or not; refers back to research; describes other possible experiments, best refers to....
Conclusion
Any factor that is not allowed to change.
Constant
A group or sample that is used as a standard for comparison.
Control
The best term to describe the group in an experiment that is normal or unaffected by the researcher is...
Control group
Which sentence best states the importance of using control groups?
Control groups allow for comparison between subjects receiving a treatment and subjects receiving no treatment
Which of the following sets of key terms would be used to locate relevant articles for a student doing research on DNA replication?
DNA polymerase, deoxyribonucleotides, ligase
Information gathered from observing a plant grow 3cm over a two-week period, results in....
Data
Which section of the scientific report contains tables and graphs?
Data
The information collected while doing an experiment; recorded in tables is known as....
Data/Results
The factor in an experiment that responds to the purposefully changed factor.
Dependant variable
The term best used to describe the variable that changes as a result of the experiment is...
Dependant variable
Which step of the scientific method includes developing a plan for carrying out the project?
Design the experiment
A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. The orchard sprayed with the chemical yeilds an average of 60 apples per tree, the other orchard yields an average of 40 apples per tree. Based on the data, the scientist would:
Determine that the chemical increases apple yield
Which of the following would be considered basic research?
Determining the structure of an atom
Which domain of biotechnology does DNA identification and DNA fingerprinting, forensics fall under?
Diagnostic Research Biotechnology
Which of these words would you NOT associate with the scientific method?
Disorganized
Scenario: Your mom has a bunch of potted petunia plants on the patio. You notice that some of them are a lot taller than others. A correctly written problem for this scenario would be...
Does the amount of sun affect the growth of the petunias?
Which step of the scientific method includes making necessary calculations, and determining if the information allows you to accept or reject the hypothesis?
Draw conclusions
Which of the following is NOT an aspect of setting up a legal scientific lab book?
Editing using white out
What is known as all the conditions, circumstances, and influences surrounding and affecting an organism or group of organisms?
Environment
Before conducting an experiment, individuals should consider the moral principles that define right and wrong in a society. What are these principles?
Ethics
The process of going through the procedures, best refers to....
Experiment
The term to best describe the group changed by the researcher is...
Experimental Group
Ultimately, all scientific knowledge comes from:
Experimentation and Observation
An independent variable is a factor that changes because of procedures conducted on the dependent variable.
FALSE
It is an acceptable lab safety practice to heat liquids in a closed container.
FALSE
The following statement is an example of a qualitative statement: "The cactus has 4 blossoms on it."
FALSE
The following statement is an example of a quantitative statement: "This food sample tastes sour."
FALSE
The variable that changes as a result of the manipulated variable is the independent variable.
FALSE
The variable that is being changed or manipulated is the dependent variable.
FALSE
When using sharp cutting instruments in the science lab, it is acceptable to cut towards you.
FALSE
Which step in the scientific method includes developing a statement to be proven or disproven?
Form a hypothesis
The most valid and reliable test of the hypothesis, more pine seeds germinate after a forest fire, would include an experimental group of pine seeds that was recovered from a fire area and pine seeds that were —
Found before a fire
What technique has taken over selective breeding in an effort to modify genes in plants and animals?
Genetic Engineering
Which of the following should be worn when working with chemicals?
Gloves
Which piece of Equipment should be put on without contaminating the outer surface?
Gloves
What is known as the great advance in world food production in the 1960's?
Green Revolution
John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the experimental group.
Group A
John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the control group.
Group B
A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the dependant variable in this experiment?
Growth
What do you do to test a hypothesis?
Guess
Which of the following is NOT a part of how scientists work?
Guessing
What act was created in 1872 by Congress to establish experiment stations in all states with land grant colleges?
Hatch Act
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is the dependant variable?
Height of plants
Which question cannot be answered scientifically because the quantity cannot actually be measured?
How happy is a chimp when it finds it's favorite food?
A statement of possible relationships between the independent and dependent variables.
Hypothesis
The best term to describe a proposal intended to explain certain facts or observations is a/an..
Hypothesis
The step in the scientific method that is written in the form of "If....then...because..."
Hypothesis
What is a statement that proposes a cause-and-effect relationship between two variables?
Hypothesis
Which step of the scientific method encompasses deciding specifically what it is that you wish to find out?
Identify the Problem
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is John's hypothesis?
If older compost is applied, then plan growth will be increased.
Evaluate the following hypothesis: If hand sanitizer is effective then it will inhibit bacterial growth.
Incorrect: Missing how the results will be measured.
The factor in an experiment that is changed on purpose.
Independent variable
The term best used to describe the variable changed by the researcher is
Independent variable
Which domain of biotechnology does fermented foods and beverages fall under?
Industrial and Environmental Biotechnology
Which section of the scientific report contains the statement of the problem, background, and objectives?
Introduction
The idea behind a(an) _____________ is to see what happens if...
Investigation
Which statement best describes qualitative data?
It can be acquired in the detailed examination of personal interviews or observations.
What is an experiment?
It is an activity designed to test the validity of a hypothesis.
Which biosafety level characterizes most high school laboratories?
Level 1
Which biosafety level would be used to characterize a facility that contains the small pox virus?
Level 4
When dealing with bacteria growth over time, which type of graph is appropriate?
Line graph
Using the scientific method, this French scientist developed a means of vaccinating animals to make them immune to disease.
Louis Pasteur
Which scientist hypothesized that animal that had contracted a disease and survived must have built an immunity to the disease?
Louis Pasteur
A list of everything that will be used throughout the experiment, refers to....
Materials
Which section of the scientific report contains a list of supplies needed?
Materials and Methods
This is the middle point of a set of numbers going from the least to the greatest.
Median
Which domain of biotechnology does the production of insulin fall under?
Medical/Pharmaceutical Biotechnology
The device that produces magnified images of structures that is too small to see with the unaided eye.
Microscope
The number that occurs the most in a set of numbers is called ___.
Mode
Which of the following best explains why a student researching genetics should use the most recent textbooks available?
New discoveries frequently add to older knowledge in genetics
Which of the following is a safe practice when working with electricity?
None of the answers are correct
Which of the following is a safe practice when working with molds or microorganisms?
None of the answers are correct
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the dependant variable.
Number of scratches
Roads are slippery when there is snow on the roads. This is an example of
Observation
The process of gathering info about events in a careful, orderly way; usually involves using the senses, best refers to....
Observations
A controlled experiment allows the scientist to isolate and test....
One Variable
The process by which several researchers review another researcher's manuscript prior to publication to ensure research quality is referred to as:
Peer review:
For what do the initials PPW stand?
Personal Protective Wear
Which of these is not a step of the scientific method?
Plagiary
Which of the following is the correct distinction between pluripotent and totipotent cells?
Pluripotent give rise to many but not all cell types and totipotent give rise to all.
The question that you are trying to answer by going through the scientific process is known as....
Problem
What is the correct order of the components of a lab report?
Problem/question, hypothesis, material, procedures, data/observations, analysis, conclusion
A step-by-step detailed description of what is to be done during the experiment is know as....
Procedure
In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Is the dependant variable data Allen is gathering quantitative or qualitative?
Qualitative
Observations that describe something using words is called ____________ observations.
Qualitative
Which of the following is not a quantitative variable?
Quality
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Was the data gathered in this research qualitative or quantitative?
Quantitative
The difference between the minimum and the maximum observation in the data is called the...
Range
Two plant species found in a dry region of the western United States exhibit vastly different abilities to survive. Species A has very slow stem growth and few leaves but is very abundant. Species B has rapid stem growth and many leaves but is very rare. Which hypothesis is most likely supported by this information?
Reduced stem growth may give species A an advantage over species B
Used to reduce the possibility of chance errors.
Repeated trials
Gathering info that is already known about a topic so that a good hypothesis can be written, best refers to....
Research
Which step of the scientific method encompasses reading up on and becoming informed about the topic?
Review of literature
A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the independent variable in this experiment?
Soil
Which of the following should be worn when working with chemicals?
Splash proof goggles
A control group is used as a comparison to the group where things (variables) are changing.
TRUE
The following statement is an example of a qualitative statement: "The leaves of the plant look brown."
TRUE
The following statement is an example of a quantitative statement: "The number of hatched shrimp cysts have increased to 5 shrimp."
TRUE
The scientific method was developed to help scientists organize the process of solving problems.
TRUE
When heating liquids in a test tubes, it is a safe practice to point the opening away from yourself and others.
TRUE
Which of the following methods would provide the most accurate information for students collecting data about local attitudes concerning the use of alternative fuels for automobiles?
Take an opinion poll of drivers
___________ is defined as the application of science to solve a problem.
Technology
What is the controversy surrounding the use of human stem cells?
That using embryonic stem cells is potentially destroying a life.
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What would be the most appropriate title for this experiment?
The Effect of Different Aged Compost on Bean Plant Growth.
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Which of the following would be the most appropriate title for the experiment?
The Effect of Floor Waxes on the Number of Tile Scratches.
Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the dependant variable.
The ability to move the wood block
A biology class of 24 students decides to measure the height of each student and then calculate the average height for the class. Which of these is a possible source of error in this activity?
The accuracy of making and recording measurements
Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the dependant variable.
The amount of green slime
Which of the following examples would NOT be criteria for an article being reliable?
The author by an intelligent individual.
Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly?
The black swallowtail laid its eggs on a prasley plant.
A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent (manipulated) variable in the experiment?
The chemical
Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. What should Fred's conclusion be?
The coconut juice did not get rid of the green slime.
John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. What should John's conclusion be?
The energy drink did not increase the productivity of workers
John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the independant variable.
The energy drink or lack thereof
Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the dependant variable.
The experimental itching power makes subject itch longer.
Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the experimental group.
The microwaved mice
Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the control group.
The non-microwaved mice
Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. What should Larry's conclusion be.
The non-microwaved mice were stronger
Which factor is NOT a criteria to be examined when determining if a resource is relevant?
The number of authors involved in formulating the information.
Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?
The percentage of humidity
Which of the following is most important when judging the quality of a scientific theory?
The quality and reliability of data that supports the theory
In 1928, the scientist Alexander Fleming was trying to grow the bacterium Staphylococcus, and by chance, discovered that it would not grow in the presence of a mold that he named Penicillium. In 1939, Ernst Chain and Howard Florey purified penicillin, and in 1941, penicillin was first used to treat bacterial diseases. In 1945, Alexander Fleming, Ernst Chain, and Howard Florey received the Nobel Prize in medicine for the discovery and isolation of penicillin. These facts show that —
The scientific process often requires the efforts of many people working together
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the control.
The section with no wax
Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the control group.
The side of the shower sprayed with water
Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the independant variable.
The solution sprayed on the shower
John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the dependant variable.
The stacks of paper made
Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the experimental group.
The subject sprinkled with the experimental itch powder
Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the control group.
The subject sprinkled with the original itching powder
Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the independant variable.
The type of powder used
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. The 5 sections coated with Tough Stuff had a total of 12 scratches, the 5 sections coated with Steel Seal had a total of 23 scratches and the untreated sections had a total of 47 scratches. W
Tough Stuff was most effective at preventing scratches
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the independant variable.
Type of Floor Wax
What agency is responsible for managing and enforcing regulations on organisms created using genetic engineering?
United States Department of Agriculture
1000 grams is equal to _____ kg?
1
1000 meters is equal to ______km?
1
What is the scientific notation for the following number: 1,000,000,000
1.0 x 109
1 liter is equal to ______ml?
1000
1 meter is equal to ______mm?
1000
Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the independant variable.
Whether or not the mice were microwaved
What is the mode of this set? 6, 2, 4, 5, 7, 3, 8, 2, 9
2
What is the range of this set? 2, 4, 6
4
What is the mode in this set? 3, 5, 4, 2, 5, 3, 5, 2, 5
5
Harvester ants often strip a bush of all of its leaves. Some people believe this helps the plant grow thicker, healthier stems. In an experiment, a student stripped off all the leaves from a set of plants. In a second set of identical plants, the student allowed ants to strip off the plants' leaves. In order to improve this experimental design, it is most important to add a set of plants —
With its leaves left intact
Where should the independent variable be on the graph?
X axis
What should be added to a microbial plate prior to disposal?
95% ethanol
If a student needs to do research on heredity for a science project, which of these sources is the most reliable resource?
A scientific journal
Which of the following would be considered a good resource for a literature review?
A textbook
Which of the following would be considered applied research?
Affect of feed additives on livestock growth
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is the independant variable?
Age of compost
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. Which of the following was not a constant in this experiment?
Age of compost
Which domain of biotechnology does transgenic plants and animals fall under?
Agricultural Biotechnology
The best term to describe the application of scientific principles and new technologies to agriculture is...
Agriscience
Which science accounts for 20% of the jobs in the United States?
Agriscience
One relationship of agriscience with many other sciences is that
Agriscience is the application of many other sciences
What is one relationship between agriscience and many other sciences?
Agriscience is the application of many other sciences.
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the item(s) held constant.
All answers are correct
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. Which of the following was a constant in this experiment?
All answers are correct
Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. How can this experiment be improved?
All answers are correct
Which of the following precautions should be taken when working with animals and humans?
All answers are correct
Which of the following precautions should be taken when working with chemicals?
All answers are correct
Which of the following precautions should be taken when working with electricity?
All answers are correct
Which of the following precautions should be taken when working with mold and microorganisms?
All answers are correct
Which of the following should be included in the conclusion of a scientific paper?
All answers are correct
Which of the following should be included in the introduction of a scientific paper?
All answers are correct
Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. How could Fred improve this experiment?
All could improve the experiment
Which of the following is a valid prediction for why a plant appears to be dying?
All of the above
A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After three weeks, the number of scratches in each of the test sections was counted. Which of the following would be an appropriate hypothesis?
All of the answers are correct
Which of the following should be considered when designing an experiment?
All of the answers are correct
The career and job outlook in agriscience is..
All stated answers are correct
After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants received the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. The average height of the plants in flat A was 12 cm, the average height of plants in flat B was 18 cm and the average hight of plants in flat C was 8 cm. Was John's hypothesis correct?
Yes
When preparing to heat a liquid in a beaker or flask on a hot plate, the first safety precaution that should be taken is to:
check the glassware for cracks or chips.
Photosynthesis
the food-making process of plants
Biotechnology
the management of biological systems for the benefit of humans, including cloning, gene transfer and other technologies
What should ocurr in a controlled experiment?
the researcher controls for the effects of all variables except one
Testable questions have all of the following characteristics EXCEPT
they always produce a clear answer once tested.