Life

4. Which of the following best describes a theory?

a. A wild guess as to the nature of things. b. A conclusion without basis in hard facts. c. An explanation based on several lines of experimental evidence. d. A prediction of the outcome of a single experiment. e. A highly-specialized conclusion to one experiment.

27. All ecosystems:

a. Are entirely self-sufficient b. Once mature never change c. Consist of only living organisms d. Need a continuous outside energy source

The scientific study of life is called:

a. Biology

The scientific study of life is called:

a. Biology b. Genetics c. Proteomics d. Genomics e. Chemistry

The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, and two squirrels. Together, all of these organisms make up a/an

a. Community

To be considered a living organism, the organism must consist of:

b.

14. In an experimental procedure what is actually being measured by the investigator is the:

b. Dependent variable

22. How could some of the original strain of S. aureus bacteria survive in the presence of methicillin?

b. They had pre-existing mutations that gave resistance

Science is...

b. a body of knowledge

17. A hypothesis is defined as

b. a testable explanation based on an observation.

A theory differs from a hypothesis in that a theory:

c. All of these are correct

4. Which of the following best describes a theory?

c. An explanation based on several lines of experimental evidence.

15. Which is not a major characteristic of life?

c. Movement

10. In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, the dependent variable would be:

c. The distance the golf ball traveled

5. In general, the scientific method could be explained as

c. a way of obtaining repeatable answers.

9. In order to test the importance of a particular nutrient to plant growth, you

c. grow the plant in its native soil and in soil lacking the nutrient you are studying.

6. Human body temperature averages 37 degrees Celsius. The body's ability to maintain this temperature is one example of

c. homeostasis.

8. A hypothesis

c. is a tentative explanation for a specific phenomenon.

12. In this experiment the size of the pot should be which of the following?

d. A standardized variable

21. The transport of blood by the combining of endothelial cells to form a capillary is an example of:

d. An emergent property

19. Which is the correct sequence for levels of biological organization within an organism?

d. Atom - molecule - organelle - cell - tissue

27. All ecosystems:

d. Need a continuous outside energy source

30. Which is a correct sequence of steps in the scientific method?

d. Observation - form hypothesis - design an experiment - collect data

29. As you move up the levels in the hierarchy of organization, properties arise that are the result of the interactions between components. These are called ____ properties.

d. emergent

20. In order to be scientifically valid, a hypothesis must be

d. testable.

Staphylococcus aureus is a:

e. Bacterium

28. A structure consisting of tissues organized to carry out a specific function defines a(an):

e. Organ

24. Homeostasis means:

e. That conditions remain within a constant range

7. In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, the independent variable would be:

e. The type of material the club is made of

13. A hypothesis is defined as

e. an explanation of an observation.

18. Life is organized in a hierarchical fashion. Which of the following sequences illustrates that hierarchy as it increases in complexity?

e. molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem

3. A theory differs from a hypothesis in that a theory:

C. An explanation based on several lines of experimental evidence.

1. Which of the following groups is in the correct order, from smallest to largest?

C. Electron-atom-molecule-cell

2. Which of the following is/are properties of life?

E. All of these are correct

12. You perform an experiment in which you take 16 pots of strawberry plants and give half of them 1 gram of ammonium nitrate per liter of water and the other half just get water. Each group is then split in half again, and exposed to either eight or 16 hours of light each day. You monitor the height of the plants for four weeks. You observe that increasing ammonium nitrate and light both increase plant height. In this experiment the size of the pot should be which of the following?

a. Either a dependent or standardized variable b. Either an independent or dependent variable c. A dependent variable d. A standardized variable e. An independent variable

15. Which is not a major characteristic of life?

a. Energy use b. Homeostasis c. Movement d. Evolution e. Structural organization

30. Which is a correct sequence of steps in the scientific method?

a. Form hypothesis - observation - design an experiment - collect data b. Observation - form hypothesis - draw conclusions - design an experiment c. Observation - draw conclusion - design an experiment - form hypothesis d. Observation - form hypothesis - design an experiment - collect data e. Form hypothesis - observation - collect data - design an experiment

3. A theory differs from a hypothesis in that a theory:

a. Has more supportive evidence than a hypothesis b. Ties together many existing observations c. Is broader in scope than a hypothesis d. Has predictive power e. All of these are correct

A theory differs from a hypothesis in that a theory:

a. Has predictive power b. Is broader in scope than a hypothesis c. All of these are correct d. Has more supportive evidence than a hypothesis e. Ties together many existing observations

Which of the following is not a true statement about the scientific method?

a. It does not apply to problems encountered in every day life

Which of the following is not a true statement about the scientific method?

a. It does not apply to problems encountered in every day life b. It is a framework to consider ideas in a repeatable way c. It is a general way of organizing an investigation d. It is a framework to consider evidence in a repeatable way e. It begins with observations

23. Which of the following is not true of Science ?

a. It is based on faith.

23. Which of the following is not true of Science ?

a. It is based on faith. b. Ot is concerned with the natural world. c. It is based on evidence. d. It builds on what has been learned earlier.

25. Which of the following is not true about a hypothesis?

a. It is based on previous knowledge

25. Which of the following is not true about a hypothesis?

a. It is based on previous knowledge b. It can be proven to be false c. It must be testable to be useful d. It can be proven to be true e. It is a tentative explanation

28. A structure consisting of tissues organized to carry out a specific function defines a(an):

a. Molecule b. Atom c. Cell d. Population e. Organ

19. Which is the correct sequence for levels of biological organization within an organism?

a. Molecule - atom - organelle - tissue - cell b. Organelle - molecule - atom - tissue - cell c. Cell - organelle - atom - tissue - molecule d. Atom - molecule - organelle - cell - tissue e. Atom - organelle - molecule - cell - tissue

21. The transport of blood by the combining of endothelial cells to form a capillary is an example of:

a. Natural selection b. A population c. Adaptation d. An emergent property e. Asexual reproduction

16. A scientist examining a group of cells under the microscope notices the presence of nuclei within these cells. Chemical tests reveal that each cell is surrounded by a wall composed of cellulose. These cells must come from an organism that is a member of the Kingdom

a. Plantae.

16. A scientist examining a group of cells under the microscope notices the presence of nuclei within these cells. Chemical tests reveal that each cell is surrounded by a wall composed of cellulose. These cells must come from an organism that is a member of the Kingdom

a. Plantae. b. Monera. c. Fungi. d. Animalia. e. Protista.

To be considered a living organism, the organism must consist of:

a. RNA and proteins b. One or more cells c. Atoms and molecules d. DNA and RNA e. DNA and proteins

14. In an experimental procedure what is actually being measured by the investigator is the:

a. Standardized variable b. Dependent variable c. Independent variable d. Control group

24. Homeostasis means:

a. That cells have enough water b. That conditions are held constant and do not change c. That all organisms require an energy source d. That a population changes over time e. That conditions remain within a constant range

22. You expose the bacteria Staphylococcus aureus to low levels of the antibiotic methicillin. The surviving bacteria are then exposed to higher concentrations of methicillin and the process repeated until a strain of methicillin-resistant S. aureus (MRSA) was generated. To test your hypothesis, you perform an experiment by spreading the original strain of S. aureus and the MRSA strain onto agar plates containing doses of methicillin used in the hospital, and only the MRSA survives. How could some of the original strain of S. aureus bacteria survive in the presence of methicillin?

a. The bacteria wanted to survive the antibiotic and mutated to become resistant b. They had pre-existing mutations that gave resistance c. The methicillin was no longer active d. The methicillin caused mutations in the bacteria e. The methicillin may not have been added to those plates

11. In an experiment, which of the following is not generally a true statement?

a. The smaller the sample size the more meaningful the results

11. In an experiment, which of the following is not generally a true statement?

a. The smaller the sample size the more meaningful the results b. It is important to standardize aspects of an experiment which might affect the outcome, other than the independent variable c. Without the proper control an experiment is not valid d. The larger the sample size the more meaningful the results

10. In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, the dependent variable would be:

a. The speed of the golf club prior to hitting the golf ball b. The type of material the club is made of c. The distance the golf ball traveled d. The material the golf ball was made of e. The wind direction when the experiment took place

7. In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, the independent variable would be:

a. The wind direction when the experiment took place b. The speed of the golf club prior to hitting the golf ball c. The material the golf ball was made of d. The distance the golf ball traveled e. The type of material the club is made of

Staphylococcus aureus is a:

a. Type of antibiotic b. Protist c. Fungus d. Plant e. Bacterium

5. In general, the scientific method could be explained as

a. a precise eight-step process for running metabolism. b. an experimental approach that eliminates all mistakes. c. a way of obtaining repeatable answers. d. a rigid set of rules for conducting an experiment. e. the organizing principle of all life.

Science is...

a. a set of unproven theories b. a body of knowledge c. a set of experiments d. ultimate truth

2. Which of the following is/are properties of life?

a. all of these answers are correct b. the ability to reproduce c. a complex organism d. the ability to take in and use energy e. the ability to respond to stimuli from the environment

20. In order to be scientifically valid, a hypothesis must be

a. based on solid theory b. based on faith. c. phrased as a question. d. testable.

1. Which of the following groups is in the correct order, from smallest to largest?

a. cell-molecule-organ-tissue b. community-population-species-cell c. electron-atom-molecule-cell d. atom-cell-molecule-tissue e. cell-organ-tissue-molecule

The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, and two squirrels. Together, all of these organisms make up a/an

a. community b. ecosystem c. species d. population e. biome

6. Human body temperature averages 37 degrees Celsius. The body's ability to maintain this temperature is one example of

a. decomposers. b. chemical bonds. c. homeostasis. d. biochemicals. e. an emergent property.

29. As you move up the levels in the hierarchy of organization, properties arise that are the result of the interactions between components. These are called ____ properties.

a. evolutionary b. resurgent c. convergent d. emergent

8. A hypothesis

a. is the same as a theory. b. is a widely accepted idea about a phenomenon. c. is a tentative explanation for a specific phenomenon. d. is an explanatory idea that is broad in scope and supported by a large body of evidence. e. none of these answers are correct

9. In order to test the importance of a particular nutrient to plant growth, you

a. maintain an experimental test site in a greenhouse. b. grow the plants under a wide range of conditions. c. grow the plant in its native soil and in soil lacking the nutrient you are studying. d. develop a theory of plant growth. e. add commercial fertilizer to the soil.

17. A hypothesis is defined as

a. none of the choices is correct. b. a testable explanation based on an observation. c. the details of an experiment. d. the portion of the experiment used for comparisons. e. a random guess.

13. A hypothesis is defined as

a. none of the choices is correct. b. the portion of the experiment used for comparisons. c. the details of an experiment. d. a random guess. e. an explanation of an observation.

18. Life is organized in a hierarchical fashion. Which of the following sequences illustrates that hierarchy as it increases in complexity?

a. organism, organ system, tissue, population, organ, community, cell, ecosystem, molecule b. ecosystem, population, organ system, cell, community, molecule, organ, organism, tissue c. ecosystem, molecule, cell, tissue, organism, organ system, organ, community d. cell, molecule, organ system, organ, population, tissue, organism, ecosystem, community e. molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem

26. A scientist performs a controlled experiment. This means that

a. two experiments are conducted, one differing from the other by only a single variable.

26. A scientist performs a controlled experiment. This means that

a. two experiments are conducted, one differing from the other by only a single variable. b. two experiments are conducted, one differing from the other by two or more variables. c. one experiment is performed, but the scientist controls the variables. d. the experiment is repeated many times to ensure that the results are accurate. e. the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data.