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Which of the following processes is not entropically favored? a. water evaporates b. dry ice sublimes c. ice cream freees d. calcium chloride dissolves in water
Which of the following is not a key feature of lipids? a. hydrophobicity b. extensive hydrogen bonding c. lack of repeating structures d. hydrocarbon-like structures
Which of the following is not true about carbohydrates? a. they are the main component of cellulose and starch b. the presence of OH groups increases their hydrophobicity c. in polysaccharides, they c
Compare the force-generating capacities and maximal shortening velocities of hypothetical muscles consisting of (1) one cell with 50 sarcomeres vs. (2) two cells with 25 sarcomeres each.
Approximately how many spontaneous depurinations must be repaired per day in each diploid cell?
Compare and contrast the genome and enzyme(s) present in the virions of a retrovirus and a positive-strand RNA bacteriophage?
Do proteins undergo simple diffusion or facilitated diffusion to cross a membrane? Do salts undergo simple diffusion or facilitated diffusion?
Question 1: How does Mendel's 2nd law (independent assortment) apply to experimenting natural selection in fruit flies? Question 2: Are carriers specific for the structures of individual molecules in
Tay-Sachs disease causes lysosomes to rupture. How would this affect the cell? Check all that apply. a) Biological polymers would not be broken down by lysosomes. b) Phagocytic cells would not destroy
Question 1: What s the rate limiting step in pcr Question 2: Determine if the following are primary, secondary, tertiary or quaternary protein structure:- a) results from hydrogen bonds between polar
Assume you are given two cultures, one of a species of gram-negative Bacteria and one of a species of Archaea. Discuss five different ways you could tell which culture was which.
Question 1: How does visual information processing affect the response to muscke stretch reflexes? Question 2: Although reflexes do not require the activation of higher brain centers, they can be volu
Why is it necessary to centrifuge a sample before obtaining a spectrophotometer reading? What would happen if you didn't centrifuge first?
What are the roles for RNA I and RNA II in ColE1 replication and what would happen if you affected expression of one or the other on Rop (regulatory protein)?
Question 1: What is the difference between a Cycad leaf and a Ginkgo leaf? Question 2: Using your knowledge of the action potential cycle, quantitatively describe, using either the Nernst or Goldman
When does recombination occur? a. at the two-strand stage, before DNA replication and when each member of a homologous chromosome pair is composed of two sister chromatids. b. at the two
Explain why human skin is OR is not a selectively permeable membrane (include at least one example to support your reasoning). What happens when a saltwater fish is put in freshwater? Explain the func
Question 1: Give and advantage and disadvantage of: a) paedomorphosis b) fossils Question 2: differentiate the following terms and give one example to best represent each term: Speciation and mutation
What is ram ventilation? How can the use of ram ventilation ameliorate the increase in metabolic reate with exersise seen in fish that use branchial ventilation?
What is true about fluoxetine (Prozac) and amitriptyline (Elavil)? a. Each is an example of different drug classes, but both block the transmission of serotonin across a synapse to receptors.
What is true of hypnotics? a. Mechanisms of action include suppression of the reticular activating system that controls wakefulness in our brains. b. Nursing implications include warning
Person X mates with a person who is also a carrier of cystic Fibrosis and they have one child. what is the probability that the child will not have cystic fibrosis?
Question 1: List the four bones that make up a fish's operculum. Question 2: How does a fish increase the release of oxygen from the blood in order to deliver it to the tissues of the body.
What are the differences in reaction time between the local organ tissues and the nervous system when it comes to circulation (arterial pressure in particular)?
What properties would you expect for a mutant deficient in photoreactivation compared to a mutant deficient in all of the UV repair systems ? What is unique about photoreactivation?