[BIOL 1005] All Quizzes
Which of the following will produce the least sampling error?
A large sample based on random sampling.
Pheomelanin may result in all of the following except:
Black hair
All the following parameters are required to make a good research question, except which?
Broad
A complete caption includes:
Description of data Number of replicates Constants Treatments
What is the purpose of rubbing your tongue against your cheeks and teeth before spitting in the shot glass?
Increasing the yield of DNA
Which of the following is TRUE about alcohol fermentation?
It doesn´t require oxygen
The parasitic mode of relationship between organisms is
Only one benefits, another partner is negatively impacted.
Which of the following is not a product of fermentation?
Oxygen
Brood parasitism is a type of parasitism where ... is exploited.
Parental care
Which of the following is a phenotype?
Red hair
Yeast consumes:
Sugars
What are Secchi disks used for?
To measure water clarity in bodies of water
In general, you will have assignments due on what days each week?
Tuesdays and Thursdays
Carcinogens are ... found in cigarette smoke may increase the likelihood of ..., thereby increasing the risk of cancer.
chemicals | mutations
There are many differences between DNA and RNA. One difference is that RNA:
contains the base Uracil (U)
Scientist has discovered a novel enzyme called "enzyme Z" in pineapple juice. Consider, in next enzyme kitchen lab, you were provided with a task to determine the catalytic activity of enzyme Z at various pH (pH 5, pH 7 and pH 9). The treatment(s) in this enzyme kitchen lab will be?
pH
Food chain always starts with a ... (i.e. organism that makes its own energy).
primary producer
When the fermentation process is contaminated with unwanted bacteria, it results in a...
production of acid by-products
Arrows in a food chain show a relationship between the organisms. The arrows always point towards the
receiver/consumer
The general trends from a study are found in the ... section of a scholarly article or lab report.
results
Extreme temperatures can denature enzymes. What is meant by denature?
shape of the active site changes
Which of the following was NOT a constant for the fermentation kitchen lab?
source of sugar
The positive control for the fermentation kitchen lab was...
sucrose
If both parents are homozygous recessive, then ... of the offspring will be homozygous recessive.
100%
Which of the following is NOT a parameter for a good research question?
Ambiguous
What is the role of Harmonin proteins in humans?
Assists in cytoskeleton development in ears Assists in maintaining healthy photoreceptors in eyes
People who show no signs of a given disease are:
Asymptomatic
The inheritance pattern for Acadian Usher syndrome is
Autosomal recessive
Gene sequencing involves:
Determining the exact order of all the nucleotides in a stretch of DNA
Does the genotype "Dd" exhibit the dominant or recessive trait?
Dominant
An environmental factor will always damage DNA.
False
After making observations, what is the next step in the scientific method?
Formulate research questions
What does the virus attach itself to when it enters the human body?
Receptors in the lining of the airways
Which of the following is not a biotic factor?
Temperature
A student who offers his/her work to a fellow student is demonstrating academic misconduct as per the student academic code of conduct.
True
Alleles of the same gene occupy the same chromosomal locus.
True
Although UV light can damage skin, it helps our bodies produce vitamin D to metabolize calcium.
True
The catalytic activity of enzyme Bromelain in pineapple juice is high at
Warm temperature and neutral pH
Yeast use ... when in anaerobic conditions to produce carbon dioxide and ethanol from glucose.
alcohol fermentation
Generally, assignments will be due by ... on ... of each week.
11:59 p.m. CST on Thursdays
Fermentation, including glycolysis, results in ... net ATP per glucose molecule.
2
An assignment submitted late will be penalized 10% for every ... hours it is late.
24
Quizzes account for __% of the overall course grade.
25
Labrador retrievers get their coat color from a pigment called eumelanin. Labs with lots of eumelanin pigment in their coat are black. If they have a little less, they appear brown instead. The genetic instruction for being black or brown is held at the B locus (and the B genes) in a dog's DNA. B contains an instruction to make lots of eumelanin, and causes a black Labrador coat. b contains an instruction for less eumelanin, and causes a brown or chocolate coat. The three different combinations of B genes that a Labrador can inherit from his parents are: BB, Bb, and bb. If a "Bb" male and a "Bb" female had offspring, what is the probability that their puppies would have a brown or chocolate coat?
25%
Limiting factor refers to any environmental condition that limits the population growth, abundance, or distribution of organism. Which of the following could be categorized as a limiting factor?
Available habitat Weather Competitors Diseases and parasite
You should refine your initial/raw research question based on:
Background information
Researchers found that chronically stressed individuals have significantly higher blood pressure compared to those with little stress. Which type of graph would be most appropriate to display the mean (average) blood pressure scores for high-stress and low-stress groups of people?
Bar graph with error bars
Considering that the expression of blue eyes is a recessive trait, if a boy has blue eyes, which of the following phenotypes must his parents have had?
Bb x Bb
If a student does not adhere to the Zoom etiquette guidelines, he/she may:
Be removed from the meeting Be reported to the Office of Student Accountability. Lose some participation points
How do biotic resources differ from abiotic resources?
Biotic resources are living and abiotic resources are non-living.
When performing a fermentation experiment, how do you measure how much fermentation took place?
Displacement of liquid by CO2 in the fermentation tube
Which of the following is a good research question?
Do students with high levels of self-efficacy demonstrate more active job searching behaviors?
After analyzing data, the next step in the scientific method is ...
Draw conclusions
Sunlight, water, and rocks are all biotic factors of an ecosystem.
False
The SARS-CoV-2 virus uses its own machinery for both replication and translation.
False
True/False: Bromelain is not present in canned pineapple juice, which is why the gelatin sets.
False
True/False: Extreme pH would not denature bromelain like extreme temperature does
False
True/False: Yeast are obligate anaerobes
False
How did environmental factors lead to lactose tolerance in some cultures?
Famine led to reliance on dairy and those with lactase persistence had higher survival and reproductive success
What was the main result from the Shizuka and Lyon experiment?
Female coots use first hatched to determine which chicks are theirs
How does melanin protect cells from UV radiation?
Forms a nuclear cap and absorbs UV
For the fermentation kitchen lab, you would prefer to use fresh yeast culture. What is your reason(s) behind choosing a fresh yeast culture instead of an old/dying yeast culture?
Fresh culture has no bacterial contamination. Fresh yeast culture is actively reproducing. Fresh culture results in greater product yield.
The ... refers to all the genetic characteristics of an organism.
Genotype
USH1C encodes for what protein?
Harmonin
Identify the independent variable in Shizuka and Lyon's revised question: Do coot parents use the chick that hatches first as a reference for recognizing their own offspring?
Hatch order
What are the benefits of UV light?
Help our bodies produce vitamin D
What is the MC1R gene?
Help our bodies produce vitamin D
Which of the following is not required for a well-developed research question?
Independent variable Dependent variable What you are measuring Population of interest
A good research question includes three main components:
Independent variable, dependent variable, and model organism
In a graph, the X axis represents the ... and the Y axis represents the ...
Independent variable; dependent variable
What does a catalyst do?
It increases the rate of a chemical reaction
How many nucleotide base changes exist between lactose tolerant and intolerant individuals?
One
The ... refers to the physical representation of genetic characteristics.
Phenotype
Which of the following is not a risk factor for breast cancer?
Physical exercise
After viewing all the pertinent instructions on Moodle, if a student still has a general, nonpersonal question that he/she wants to ask the instructor, he/she should:
Post it to the Student Q and A Forum
What replicates the RNA of COVID-19?
RNA polymerase from the virus
What are the common symptoms of Usher syndrome?
Retinal deterioration Deafness/hearing loss Balance issues
Researchers interested in the relation between River Shrimp (Macrobrachium) abundance and pool site elevation, presented the data in the figure below. Interestingly, the researchers also noted that water pools tended to be shallower at higher elevations. Which of the following is a plausible hypothesis to explain the results presented in the graph?
River shrimp are more abundant in lower elevations because pools at these sites tend to be deeper.
What is the relationship between Secchi disk visibility and algae density?
Secchi disk visibility decreases as algae density increases. Secchi disk visibility increases as algae density decrease
What is data called that are used for a new study but were collected by an earlier researcher for a different set of research questions?
Secondary data
Certain group of individuals evolved the lactose persistence due to a
Single nucleotide polymorphism in upstream region of lactase gene
Hitchhiker's thumb is a dominant trait. Therefore, for an individual to have hitchhiker's thumb their genotype would have to be:
Ss or SS
In a fermentation experiment bar graph, you see that sucrose and grape juice are not significantly different. You can tell this because the:
Standard error bars overlap
Choose the correct APA citation for the following source that you retrieved from an online journal: Social Work and Research, 1995, Vol. 68(2), 127-137 SSN: 1948-CCX. doi:10.1037/swr/127. Students and the Problem of Entitlement. Jeffrey T. Swan, Dennard Q. Rail, Mary N. Bushcombe, University of Georgia
Swan, J. T., Rail, D. Q., & Bushcombe, M. N. (1995). Students and the problem of entitlement. Social Work and Research, 68(2), 127-137. doi:10.1037/swr/127
Which is the most important factor to influence you to categorize a research article as trustworthy science?
The evaluation/peer-review of the article by unbiased third-party experts in the field
Which of the statements is incorrect regarding how COVID-19 can affect the immune system?
The immune system does not notice infection.
When a mutation occurs, which of the following outcomes is/are possible?
The mutation results in a change to a protein which benefits the organism. The mutation results in a change to a protein which harms the organism. The mutation has no effect on the proteins produced.
Which of the following statements are true?
The smaller the sample size, the greater the sampling error.
Why does wine making require a fresh yeast culture?
The yeast culture needs to be actively reproducing
For an experiment, a group of scientists want to examine if it's possible that roses grow taller when they receive more water. The scientists water three separate groups of roses, one time a week, two times a week, and three times a week, respectively. After two weeks, the scientists determine the average height of each group of roses The ... is/are the treatment(s) for the experiment above
Time of watering
What was the purpose of dish soap in the DNA extraction kitchen lab?
To break down the cell membranes to allow cell contents to spill out
Consider the central dogma of biology. Which of the following must occur first?
Transcription
The intensity of UV radiation declines the closer you get to the poles.
True
The main mode of transmission of COVID-19 from person-to-person is via respiratory droplets.
True
The people most at risk of folate deficiency are people with light skin who evolved in regions with weak UV exposure.
True
The role of BRCA1 and BRCA2 genes in human cells is to prevent abnormal growth by regulating other proteins that repair DNA.
True
True/False: Bacteria makes wine sour because when they ferment, they produce sour acidic byproducts
True
Ultraviolet radiation can destroy folate in light-skinned individuals.
True
Ultraviolet radiation contains ..., which is critical in the synthesis of vitamin D.
UVB
Which of the following is not a condition necessary for evolution?
Variation in individuals/trait Variation in fitness Heritability of trait Reproduction
The control in your enzyme kitchen lab experiment was ...
Water
Ecosystem ecology refers to the level of ecological study that includes the study of ... and ... factors and how they interact with each other.
biotic | abiotic
Dominant alleles are represented by a
capital letter
A possible answer to a scientific question is called a ...
hypothesis
The ... section of a scholarly article or lab report begins with background information related to the study.
introduction
What are genes?
units of heredity that determine trait inheritance
A positive control...
uses a treatment that is known to produce specific results.
If you have specific questions about an assignment, you can:
visit your instructor's office hours. post to the Student Q & A forum. visit another instructor's office hours.
The negative control for the fermentation kitchen lab was...
water
You learned about two genes in humans, BRCA1 and BRCA2 (the abbreviation stands for breast cancer susceptibility gene), which have a given function in our cells. Which of the statements below best describes a consequence of one of these mutations?
will increase our chances of getting cancer
The term "anaerobic" means:
without oxygen
Due to the asynchronous format of this course, late submissions will not be accepted after ... days.
3
Aerobic respiration, including glycolysis, results in ... net ATP per glucose consumed.
38
According to LSU's policy, students should anticipate spending ... hours of time for every one-credit. Since BIOL 1005 is a 2-credit course, you should anticipate spending around ... hours per week on this course.
45; 5
How many chromosomes do humans have in their diploid state?
46
What is the average incubation period for COVID-19?
5-6 days
Labrador retrievers get their coat color from a pigment called eumelanin. Labs with lots of eumelanin pigment in their coat are black. If they have a little less, they appear brown instead. The genetic instruction for being black or brown is held at the B locus (and the B genes) in a dog's DNA. B contains an instruction to make lots of eumelanin, and causes a black Labrador coat. b contains an instruction for less eumelanin, and causes a brown or chocolate coat. The three different combinations of B genes that a Labrador can inherit from his parents are: BB, Bb, and bb. If a "Bb" male and a "bb" female had offspring, what is the probability that their puppies would have a brown or chocolate coat?
50%
Labrador retrievers get their coat color from a pigment called eumelanin. Labs with lots of eumelanin pigment in their coat are black. If they have a little less, they appear brown instead. The genetic instruction for being black or brown is held at the B locus (and the B genes) in a dog's DNA. B contains an instruction to make lots of eumelanin, and causes a black Labrador coat. b contains an instruction for less eumelanin, and causes a brown or chocolate coat. The three different combinations of B genes that a Labrador can inherit from his parents are: BB, Bb, and bb. If a "Bb" male and a "Bb" female had offspring, what is the probability that their puppies would have a black coat?
75%
What is a mutation?
A change in the normal sequence of DNA in a gene.
Your doctor prescribed you a drug that is brand new. The drug has some significant side effects, so you do some research to determine the effectiveness of the new drug compared to similar drugs on the market. Which of the following sources would provide the most accurate information?
A research study conducted by outside researchers
Which of the following is a valid scientific argument?
A strain of bacteria was genetically engineered to lack a certain gene, thus leaving the bacteria unable to perform cell division. Introduction of the gene back into the mutant bacteria restored the ability to perform cell division. These facts indicate that the gene is essential for cell division.
Which of the following statements best describes the genetics of lactose intolerance?
After weaning, the lactase gene naturally produces less lactase.
For an experiment, a group of scientists want to examine if it's possible that roses grow taller when they receive more water. The scientists water three separate groups of roses, one time a week, two times a week, and three times a week, respectively. After two weeks, the scientists determine the average height of each group of roses. The ... is the independent variable for the experiment above
Amount of water
What does a completely shaded-in symbol on a pedigree of an autosomal recessive trait represent?
An individual who shows the trait
Fermentation requires:
Anaerobic conditions
After collecting raw experimental data, what is the next step in the scientific method?
Analyze the data
... factors refer to living or once-living organisms in an ecosystem and ... factors refer to non-living physical and chemical elements in the ecosystem.
Biotic | abiotic
Lactose persistence is thought to have arisen and spread through natural selection. The natural selection process responsible for lactose persistence is/are
Both positive and negative selection
Canned pineapple juice worked better than fresh pineapple juice in this experiment. Why?
Bromelain enzyme denatures during the canning process because of heat and pressure
... is an enzyme present in pineapple juice, catalyzing the hydrolysis of peptide bonds in ...
Bromelain, gelatin
How can you tell a yeast culture is alive?
Bubble formation
Which of the following is NOT a common use of yeast for alcohol fermentation?
Butter making
Which of the following equation represents the cellular respiration process?
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP, C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
The by-product of fermentation being measured by balloons during the fermentation kitchen lab is:
CO2
What would be the resulting mRNA from this template strand of DNA: GAT-TAC-AGA-TTA-CAT
CUA-AUG-UCU-AAU-GUA
It is a well-established scientific fact an enzyme called "enzyme X" has highest catalytic activity at the room temperature. Consider, in next enzyme kitchen lab, you were provided with a task to determine the catalytic activity of enzyme X at various temperatures (0°C, 50°C and 100°C). While performing any science experiment, you need to have the right control(s) to compare your experimental results. What will be your control(s) while determining the catalytic activity of "enzyme X" at different temperature?
Catalytic activity of Enzyme X at the room temperature
Cancer is best and fully described as:
Cells which grow abnormally and no longer function correctly
Based on the following research question: 'Do coot parents use the chick that hatches first as a reference for recognizing their own offspring?', what is the dependent variable?
Chick recognition
Who would be most at risk of developing rickets, a bone disease caused by insufficient calcium absorption?
Children born to mothers with dark skin living far from the equator.
Messenger RNA (mRNA) coding various proteins has its sequence most similar to which of the following?
Coding strand
For the fermentation kitchen lab, you are now ready to report the trend(s) of an experimental outcome. What is/are the trend(s) you are going to report?
Compare between the treatment(s) and control(s) and report it
How did you know that the percent survival rates between the host and foreign chicks were different for Shizuka and Lyon's experiment?
Compared error bar overlap
A study about average height between males and females was conducted using a random sample of 1,000 participants from the United States. In this sample, the average height for females was 162 cm and 175 cm for males. What is one way to determine if males are actually a different usual height than females in the general population?
Conduct statistical analysis with a t-test to determine if males are usually taller than females.
Lactose intolerance is an example of
Convergent evolution
The CRAAP method stands for ...
Currency, Relevance, Authority, Accuracy, Purpose
Central dogma indicates the flow of information in which order
DNA to RNA to protein
What is the central dogma of biology?
DNA → RNA → Protein
A researcher hypothesized that mice fed a low carbohydrate diet would not develop insulin resistance compared to those fed a normal diet. Which of the following data provides the strongest support of this hypothesis?
Data from yearly screenings for insulin resistance in mice fed a low carbohydrate diet compared to mice fed a normal diet.
COVID-19 fuses with a host cell membrane through the process of:
Endocytosis
What are the products of alcohol fermentation?
Ethanol and CO2
How do extreme temperatures affect bromelain function?
Extreme temperatures denature bromelain, and then collagen cannot bind to the active site
An individual who has COVID-19, but is asymptomatic, is not a risk to others.
False
Chemical reactions are the basis of most biological processes. Many of these reactions require a catalyst to occur at rates that are necessary for living systems. A catalyst decreases the rate of a chemical reaction without being consumed or changed during the process.
False
End of semester grades will be rounded up if the decimal value is 0.5 or above.
False
Healthy individuals should not be asked to practice social distancing.
False
If the instructor does not review the plagiarism clause in class, the student will not be held responsible if his/her work is deemed plagiarized.
False
If you have a question about your grade or a graded item, you can visit any of the instructor's office hours to ask.
False
In lactose persistent individuals, a single nucleotide polymorphism (SNP) mutation occurs within the lactase gene.
False
Light skin is an adaptation to protect against UV damage.
False
Mutations are always harmful.
False
Which of the following do you use in a pedigree to show that someone expresses a recessive trait?
Fully-shaded square
... are alterations in the most common DNA nucleotide sequence. These alterations can be benign, pathogenic, or of unknown significance.
Genetic variants
Why does the test for lactose intolerance measure glucose instead of lactose? (Choose two)
Glucose is a product of lactose break down and can be measured in blood. Lactose exists in the intestines and can't be measured in the blood.
Which of these three sugars (lactose, galactose, and glucose) are monosaccharides? Choose all that are correct.
Glucose, Galactose
Which of the following do you use in a pedigree to show that someone is a carrier of a recessive trait?
Half-shaded circle
For an experiment, a group of scientists want to examine if it's possible that roses grow taller when they receive more water. The scientists water three separate groups of roses, one time a week, two times a week, and three times a week, respectively. After two weeks, the scientists determine the average height of each group of roses. The ... is the dependent variable for the experiment above
Height of roses
Is the genotype "Dd" homozygous or heterozygous?
Heterozygous
Canned pineapple juice cannot function as a meat tenderizing agent because
High heat treatment destroys bromelain enzyme during canning process
What translates the viral mRNA?
Host cell machinery
Select the well-defined research questions from the statements below.
How do changes in temperature affect reef fish growth rate? How many terrestrial mammals did not survive fires in Australia during the last season?
You have been doing research to help your grandmother understand two new drugs for osteoporosis. One publication, Eurasian Journal of Bone and Joint Medicine, contains articles with data only showing the effectiveness of one of these new drugs. A pharmaceutical company funded the Eurasian Journal of Bone and Joint Medicine production and most advertisements in the journal are for this company's products. In your searches, you find other articles that show the same drug has only limited effectiveness. Pick the best answer that would help you determine the credibility of the Eurasian Journal of Bone and Joint Medicine.
It is not a credible source of scientific research because only studies showing the effectiveness of the company's drugs were included in the journal.
An example of a catalyst is:
Lactase
Which enzyme breakdowns lactose into glucose and galactose?
Lactase
If muscle do not get enough oxygen during heavy exercise, glycolysis is followed by
Lactic acid fermentation
Which of the following is not an abiotic factor that may cause algal blooms?
Light intensity Temperature Phosphorus concentration
You are volunteering in the NOLA Aquarium for the summer, and you become curious about the effect of climate change in lobsters. You have the opportunity to conduct an experiment to answer a research question related to this problem. You set-up five tanks of 200 liters of water, each held at either 20°C, 22°C, 24°C, 26°C, or 28°C. Each tank has 10 adult lobsters in it and you measure the length of each lobster every four days for one year. The dependent variable in this experiment is:
Lobster length
How can you best refine a research question?
Looking up background information
The first step of any scientific method is to
Make observations
All amino acids are coded by a three nucleotide sequence. What does a three nucleotide base AUG codes for?
Methionine
What is the threat of excessive UV light penetrating living cells?
Mutations DNA damage
Fermentation allows glycolysis to continue by providing the ... needed to accept high-energy electrons.
NAD+
You are writing a paper about the recent impacts of Africanized honeybees to the United States and you found the following article: Flight of the Killer Bees. Newsweek, v. 117 no. 19 (Nov. 14, 1994) p.25. Would this be considered an appropriate scholarly journal article for a research paper?
No, Newsweek is not considered a scholarly journal. No, the currency (date of publication) of the article is relevant to the research question.
According to LSU's Online Etiquette Guide, which of the following should students avoid when composing an email to an instructor?
Not including the course section number and any other necessary information Asking a question without looking for the answer on Moodle first Starting the email with "Yo Teach!" Writing in run-on sentences without punctuations
The scientific method begins with...
Observations
In Shizuka and Lyon's mixed experiment, the percent survival of foreign and host chick ... when both foreign and host chicks were introduced together in the parent coot's nest.
Remained similar, no significant change.
Which of the following statements are true regarding the fermentation pathway?
Requires anaerobic condition Regenerate NAD+ for the glycolysis to continue Produce less energy as compared to aerobic respiration
Which of the following actions is a valid scientific course of action?
Several research studies have found a new drug to be effective for treating the symptoms of autism; however, a government agency refuses to approve the drug until long term effects are known.
How can you help slow the pandemic?
Stay home Practice social distancing Wear a mask Wash your hands
The following are considered academic misconduct according to the LSU Code of Student Conduct:
Submitting the exact same work as your peer Submitting the same work for two assignments Not including appropriate citations Falsifying or fabricating data or information
You are volunteering in the NOLA Aquarium for the summer, and you become curious about the effect of climate change in lobsters. You have the opportunity to conduct an experiment to answer a research question related to this problem. You set-up five tanks of 200 liters of water, each held at either 20°C, 22°C, 24°C, 26°C, or 28°C. Each tank has 10 adult lobsters in it and you measure the length of each lobster every four days for one year. A constant in this experiment is:
Tanks of 200 liters of water
You are volunteering in the NOLA Aquarium for the summer, and you become curious about the effect of climate change in lobsters. You have the opportunity to conduct an experiment to answer a research question related to this problem. You set-up five tanks of 200 liters of water, each held at either 20°C, 22°C, 24°C, 26°C, or 28°C. Each tank has 10 adult lobsters in it and you measure the length of each lobster every four days for one year. The treatment (set-up) in this experiment is:
Tanks with different temperatures
A research question should always be...
Testable Simple Concise Measurable
What is the first step in SARS-CoV-2 entering host cells?
The spike protein of the virus binds to the ACE2 receptor of the host cell.
Two studies estimate the mean sugar content of an energy drink. Each study uses the same test on a random sample of bottles of the energy drink. Study 1 uses 50 bottles, and Study 2 uses 15 bottles. Which statement is true?
The uncertainty in the estimate of the actual mean sugar content will be smaller in Study 1 than in Study 2
What makes an invasive species successful?
There are no native predators. They are generalists. They are good colonizers.
Why do you think it is important to fast before taking the blood glucose test?
To measure only the glucose produced from ingesting lactose during the test.
What is the term for each step in the transfer of energy and matter within a biological community?
Trophic level
A food web is an intertwined network of multiple food chains.
True
Coronavirus gets its name from the Latin word corona, meaning crown, due to the look of its spikes.
True
Early humans developed melanin because they lost hair that used to protect from UV damage.
True
Genetic variants are specific regions of the genome which differ between two genomes.
True
If a student is unclear of an instructor's expectations for the assignment, it is the student's responsibility to seek clarification.
True
If an enzyme becomes denatured by a high temperature, but is returned to its optimal temperature, it could potentially regain its original structure and perform its intended function.
True
In alcoholic fermentation, ethanol is the oxidizing agent helping NADH get oxidized back to NAD+. This statement is:
True
In lieu of the cost of a lab manual, kitchen lab protocols and materials lists will be posted to Moodle. You are responsible for acquiring the materials to conduct the labs for on-time submissions. Kitchen lab materials will be posted one week prior to when the lab is due. Kitchen lab materials should not exceed $50.
True
Lactose is a disaccharide?
True
Mutations are a source of genetic variation in humans.
True
Once infected with coronavirus, it can take 1 to 14 days to show symptoms.
True
Science is a process that is based on facts and logical explanations.
True
Using a living host cell is the only way that a virus can replicate.
True
Which of these food chains is in the correct order?
Water lily → caterpillar → frog → snake
The number of flowers on four different types of rosebushes are counted each week for two months. Which research question is appropriate?
Which type of rosebush produces more flowers?
Your father has a widow's peak, and your mother has a straight hairline. You and your brother both have straight hairlines. You know that widow's peak is a dominant trait and a straight hairline is recessive. What is the genotype of your father?
Ww
What is the difference between yeast and bacteria?
Yeast are unicellular eukaryotes whereas bacteria are unicellular prokaryotes
A protein is defined as:
a chain of amino acids linked by peptide bonds
Fast pandemic scenarios can result in...
a higher death rate an exponential rate of infection an overwhelmed healthcare system
You are volunteering in the NOLA Aquarium for the summer, and you become curious about the effect of climate change in lobsters. You have the opportunity to conduct an experiment to answer a research question related to this problem. You set-up five tanks of 200 liters of water, each held at either 20°C, 22°C, 24°C, 26°C, or 28°C. Each tank has 10 adult lobsters in it and you measure the length of each lobster every four days for one year. The independent variable in this experiment is:
a. Temperature
If you are doing research using the keywords "death penalty" and "budget," which terms would also be worthwhile?
capital punishment and revenue
Risk factors affect the development of breast cancer by causing mutations in genes that control for
cell growth
The ... the skin, the less UV light penetrates the skin, and the ... at risk an individual is at having a vitamin D deficiency.
darker | more
The dependent variable in the fermentation kitchen lab was the ...
diameter of balloon
It was important to use a form of heat (either sunlight or a hot water bath) in the fermentation kitchen lab because:
disaccharides and polysaccharides must be broken down into monosaccharides via enzymes or heat to be metabolized
The limitation and real-world applications of a study are found in the ... section of a scholarly article or lab report.
discussion/conclusion
A ... allele always shows up in an organism when it is present.
dominant
In severe cases, COVID-19 can cause the death of ... cells, leading to infection of alveoli in the lungs.
epithelial
If you wanted to use bromelain to tenderize some meat before an LSU football game party, which of the following would you use?
fresh pineapple juice
Lactaid contains lactase, the enzyme that breaks down lactose before it reaches the intestines. What two products are the indirect result of this enzyme activity?
glucose and galactose
UV exposure is ... at the equator and very high altitudes and ... near the poles and areas of persistent cloud cover.
higher | lower
If an offspring is ..., then both parents must have at least one recessive allele.
homozygous recessive
Blue eyes is a recessive trait. Therefore, for an individual to have blue eyes their genotype would have to be:
ii
In fermentation kitchen lab, you added a small amount of yeast into various sugar solution. The idea is to add a small amount of microorganism (yeast) to start a larger culture. In this experiment, yeast served as the ...
inoculum
To evaluate the catalytic activity of Bromelain at various temperatures, you have first exposed the pineapple juice (containing Bromelain enzyme) to different temperatures. After the treatment, you mixed the pineapple juice with gelatin to check if the enzyme in pineapple juice is still functional. If the gelatin/pineapple juice mix sets, it means the enzyme in the pineapple juice after temperature treatment ... gelatin.
is not being able to hydrolyze
A negative control...
is not expected to produce results.
Which of these three sugars (lactose, galactose, and glucose) are disaccharides? Choose all that are correct?
lactose
An individual with East Asian ancestry is most likely to have:
lactose tolerance as an infant, lactose intolerance as an adult
An individual with European ancestry is most likely to have:
lactose tolerance as an infant, lactose tolerance as an adult
How does the enzyme bromelain prevent gelatin from setting?
lyses collagen into short amino acid chains
On a pedigree, a line drawn between two individuals indicates a ... A line drawn down from a marriage line indicates ...
marriage or union | offspring
Melanin is responsible for the
tanning of the skin exposed to the sun dark pigment in the hair dark pigment in the skin
When an enzyme is denatured, it is not able to function properly because:
the substrate is not able to bind to the active site
An Enzyme is a protein that catalyzes a reaction. What is meant by catalyze?
to accelerate a process