Biology and Genetics

1.) Briefly state the function of the following repair system in E. coli and ind

1.) Briefly state the function of the following repair system in E. coli and indicate which repair system is associated with the following, genes, enzymes or characteristics. 1. L…

1.) Calmodulin is a(n): A) allosteric activator of calcium-dependent enzymes. B)

1.) Calmodulin is a(n): A) allosteric activator of calcium-dependent enzymes. B) allosteric inhibitor of calcium-dependent enzymes. C) calcium-dependent enzyme. D) cell surface ca…

1.) Candidiasis can affect different mucocutaneous regions of the human body. Wh

1.) Candidiasis can affect different mucocutaneous regions of the human body. What predisposes a person to this type of mycosis? What is the term often used when referring to cand…

1.) Choose the best response for each. a.) The Ames test is commonly used to tes

1.) Choose the best response for each. a.) The Ames test is commonly used to test whether a particular chemical is mutagenic. When you conduct an Ames test, you need two groups of…

1.) Choose the true statement: a.) Simpler organisms contain fewer genes than co

1.) Choose the true statement: a.) Simpler organisms contain fewer genes than complex organisms b.) All of an organism’s genes are essential c.) All organisms contain roughly the …

1.) Classify each description as applying to either autotrophs or heterotrophs -

1.) Classify each description as applying to either autotrophs or heterotrophs -rely on other organism for energy -use inorganic materials to produce energy -make their own food -…

1.) Come up with one (1) example of how two (2) sympatric species of Apis bees c

1.) Come up with one (1) example of how two (2) sympatric species of Apis bees could potentially be prevented from successfully mating with each other in the wild. The mechanism c…

1.) Consider a 20.0 kg block at rest on a horizontal table top. The coefficient

1.) Consider a 20.0 kg block at rest on a horizontal table top. The coefficient of static friction is 0.50 and the coefficient of kinetic friction is 0.25 between block and the ta…

1.) Consider any spinal nerve. You have learned that a nerve is merely a bundle

1.) Consider any spinal nerve. You have learned that a nerve is merely a bundle of axons exterior to the CNS. Therefore, if you say “you’re getting on my nerves,” and mean it, the…

1.) Create a prokaryote gene at least 30 BP long. Mark the 5\' and 3\' ends. a.)

1.) Create a prokaryote gene at least 30 BP long. Mark the 5' and 3' ends. a.) Describe the function of this gene's product. Be creative! 2.) Describe the regulatory mechanism(s) …

1.) Create a prokaryote gene at least 30 BP long. Mark the 5\' and 3\' ends. a.)

1.) Create a prokaryote gene at least 30 BP long. Mark the 5' and 3' ends. a.) Describe the function of this gene's product. Be creative! 2.) Describe the regulatory mechanism(s) …

1.) Describe the step-wise process of how inorganic matter on primitive Earth ev

1.) Describe the step-wise process of how inorganic matter on primitive Earth evolved into multi- cellular, eukaryotic cells. Be sure to provide enough detail with each step and m…

1.) Describe what type of alleles natural selection works most strongly on, and

1.) Describe what type of alleles natural selection works most strongly on, and explain why. 2.) How does Dawson’s experiment demonstrate the concept referred to in question 1? 3.…

1.) Discuss the four components of a valid contract and apply them to a contract

1.) Discuss the four components of a valid contract and apply them to a contract with a vendor to purchase a new CT scanner. What would you include in the contract? How would you …

1.) Each daughter cell produced in meiosis has? A.) half the number of chromosom

1.) Each daughter cell produced in meiosis has? A.) half the number of chromosomes as the parent cell. B.) twice the number of chromosomes as the parent cell. C.) four times the n…

1.) Each motor neuron innervates a finite number of muscle fibers. We have refer

1.) Each motor neuron innervates a finite number of muscle fibers. We have referred to this set of muscle fibers as a motor unit. Do motor units vary in size? a.) no, they average…

1.) Envision the voltage-gated ion channels at a node of Ranvier. When these cha

1.) Envision the voltage-gated ion channels at a node of Ranvier. When these channels open, they do so in a staggered manner. The sodium channels open first and then as they are c…

1.) Estimate the length of each of the following objects in um: (400x) (100x) 2.

1.) Estimate the length of each of the following objects in um: (400x) (100x) 2.) How does a microscope's iris diaphragm lever work like the iris of an eye? 3.) Assume that you ar…

1.) Explain in 2-5 sentences the function of the ampicillin in our LB Broth: • I

1.) Explain in 2-5 sentences the function of the ampicillin in our LB Broth: • Include in your answer what specifically the bacteria need to grow in a medium containing Ampicillin…

1.) Explain reasons why 6 molecules of H2O and 6 molecules of O2 are required in

1.) Explain reasons why 6 molecules of H2O and 6 molecules of O2 are required in order to breakdown 1 molecule of glucose during aerobic respiration in mammalian cells? 2.) Spinac…

1.) Explain why chemiosmosis is able to produce more ATP than substrate-level ph

1.) Explain why chemiosmosis is able to produce more ATP than substrate-level phosphorylation. 2.) Explain the importance of mitochondria and aerobic respiration to multicellular …

1.) Explain why there is rarely lake effect snow on the northern shores of the g

1.) Explain why there is rarely lake effect snow on the northern shores of the great lakes 2.) Provide at least TWO reasons why very cold polar or arctic airmasses may form over f…

1.) Fill In The Blank. In three separate site-directed mutagenesis experiments,

1.) Fill In The Blank. In three separate site-directed mutagenesis experiments, scientists altered a Lys residue in corn PEP carboxylase to an Asn, Glu, or Arg. The substitution t…

1.) For a bacterial cell with a diameter of 1 um and a protist with a diameter 1

1.) For a bacterial cell with a diameter of 1 um and a protist with a diameter 15 um, what is the volume, surface area, and surface-to-volume (S:V) ratio for each cell assuming a …

1.) For each molecule or structure, write if it is directly required for DNA rep

1.) For each molecule or structure, write if it is directly required for DNA replication, Transcription or Translation. ATP DNA polymerase tRNA ribosome helicase UTP RNA polymeras…

1.) Gene R and gene T are genetically linked. Answer the following question conc

1.) Gene R and gene T are genetically linked. Answer the following question concerning a dihybrid organism with the genotype Rt/rT. If the frequency of recombinant gametes is 25%,…

1.) Gerhart and Pardee measured ATCase activity in the presence of a variety of

1.) Gerhart and Pardee measured ATCase activity in the presence of a variety of purine and pyrimidine derivatives. Their results are presented in Table 16.2. What compound(s) were…

1.) Glucose 6-Phosphate + H2O -> Glucose + Pi has a Keq of 270. ATP + Glucose ->

1.) Glucose 6-Phosphate + H2O -> Glucose + Pi has a Keq of 270. ATP + Glucose -> ADP + Glucose 6 phosphate has a Keq of 8 9 0. Using this information, calculate the standard…

1.) Heat is widely used as a means of sterilization and it works by denaturing m

1.) Heat is widely used as a means of sterilization and it works by denaturing macromolecules such as proteins and lipids. T or F 2.) The term virulence refers to the ability of a…

1.) How do nitrogen-fixing microbes first become associated with their symbiotic

1.) How do nitrogen-fixing microbes first become associated with their symbiotic plants? a.) They are carried in the seed. b.) They move into the vascular system and multiply. c.)…

1.) How do these nucleotide bases pair with each other? 5\'-CCTT [ Choose ] 3\'-

1.) How do these nucleotide bases pair with each other? 5'-CCTT       [ Choose ]            3'-TTCC            3'-AACC            3'-CCGG            3'-TTAA            3'-GGAA    …

1.) How does the Earth make petroleum? What are the sequential processes needed

1.) How does the Earth make petroleum? What are the sequential processes needed to develop an economically recoverable deposit? 2.) What role does plate tectonics play in the form…

1.) How does the myogenic mechanism respond to increased blood pressure in the a

1.) How does the myogenic mechanism respond to increased blood pressure in the afferent arteriole? Think about how changes in blood pressure affect the stretch of the afferent art…

1.) How does the myogenic mechanism respond to increased blood pressure in the a

1.) How does the myogenic mechanism respond to increased blood pressure in the afferent arteriole? Think about how changes in blood pressure affect the stretch of the afferent art…

1.) How might the color of the moon change when viewed from earth? What are the

1.) How might the color of the moon change when viewed from earth? What are the different examples of the different colors the moon can exhibit? 2.) What are some of the colors th…

1.) How much is the acceleration of a baseball thrown by a pitcher in a major le

1.) How much is the acceleration of a baseball thrown by a pitcher in a major league baseball game if the ball goes from 0 to 80 mph (117.3 ft/s), in a one-half-secong time period…

1.) How would you prepare 50 mL of solution that is 2mg/mL NaCl? 2.) How would y

1.) How would you prepare 50 mL of solution that is 2mg/mL NaCl? 2.) How would you prepare 10 L of 0.3 M KH2PO4? 3.) How would you prepare 500 mL of a 5% (w/v) solution of NaCl? 4…

1.) Human females have two X chromosomes in each cell. Which of the following is

1.) Human females have two X chromosomes in each cell. Which of the following is true of these chromosomes? One chromosome is inactivated. The inactivated chromosome is always the…

1.) Hydroxyapatite (HAp) is the premier building block for biomineralized tissue

1.) Hydroxyapatite (HAp) is the premier building block for biomineralized tissues. It comes in many sizes, shapes, and flavors based on how it was made (synthesis conditions) and …

1.) If 5 distinct loci contribute equally to a single trait and each locus has 2

1.) If 5 distinct loci contribute equally to a single trait and each locus has 2 distinct alleles how many different genotypes exist for this trait ? 2.) The locus encoding the en…

1.) If a substance acts as a base, which of the following must be true? a.) It c

1.) If a substance acts as a base, which of the following must be true? a.) It can donate protons b.) I can donate positively charged hydrogens c.) It can accept protons d.) It ca…

1.) If each eye has a blind spot, why is there no disruption in our view of the

1.) If each eye has a blind spot, why is there no disruption in our view of the world, even when one eye is closed? 2.) If someone is missing the green cone but not the red cone, …

1.) If you are given the following DNA segment, set up an appropriate PCR reacti

1.) If you are given the following DNA segment, set up an appropriate PCR reaction: 5' ATGCGCGCGC GATGCCGCGC GCGTAAAAAA3' Circle one choice in each category (A-E) that seems most …

1.) If you can taste the chemical PTC, it means you have at least one copy of a

1.) If you can taste the chemical PTC, it means you have at least one copy of a dominant gene C. If you can't taste it, you have two copies of the recessive allele for tasting PTC…

1.) Imagine a different system in which toads had a wide range of variation in c

1.) Imagine a different system in which toads had a wide range of variation in color. In some ponds, most of the toads are light in color. In other ponds, the average color is fai…

1.) Imagine a neuron in which the synthesis of just one protein was inhibited. I

1.) Imagine a neuron in which the synthesis of just one protein was inhibited. If this protein were calmodulin, then would the neuron be capable of neurosecretion? a.) yes, neuron…

1.) In 6 or more steps, describe the formation and geological history of where y

1.)  In 6 or more steps, describe the formation and geological history of where you live or just North America in general. The steps must be listed with the oldest event on bottom…

1.) In eukaryotes, general transcription factors _____ Select one: a. bind to ot

1.)    In eukaryotes, general transcription factors _____ Select one: a. bind to other proteins or to the TATA box b. usually lead to a high level of transcription even without ad…

1.) In order to determine the cfu/ml of bacteria in a milk sample, you dilute 1

1.) In order to determine the cfu/ml of bacteria in a milk sample, you dilute 1 ml into 9 mls of sterile water and label it tube A. From tube A, you transfer 1 ml into a new tube …

1.) In previous experiments, you determined that more than 90% of intact P falci

1.) In previous experiments, you determined that more than 90% of intact P falciparum cells and nuclei in a crude homogenate pellet in 10 minutes at 4500 rpm in a Sorvall GSA roto…