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Q1. Drugs known as uncouplers facilitate diffusion of protons across the membrane. When such a drug is added, what will occur to ATP synthesis and oxygen consumption, if rates of glycolysis and the citric acid cycle stay the similar?
The oxidation of glucose to CO2 and H2O is highly exergonic: ΔG = -636 kcal / mole. Why doesn't glucose spontaneously combust?
Q2. If frequency of having light coloured hair in the human population is 0.4, and that of having dimples is 0.5, then what is the possibility that any given individual will have either light coloured hair or dimples or both? (Suppose that these traits are independent of one another)
Why do you suppose E. coli has three different DNA polymerases? Why do eukaryotes have more DNA polymerases?
Recessive mutant alleles of an x-linked gene in Drosophila, crossveinless, prevent the development of supporting structures in the wings.
A rabbit taken from a meadow near sea level and moved to a meadow high on a mountainside would have some trouble breathing. Why give an appropriate reason.
Carbon, Hydrogen, Oxygen, and Nitrogen are the four most abundant elements found in living systems. What role does each element play?
Assume that a mutation occurs in an intron of a gene encoding a protein. What would the most probable effect of the mutation be on the amino acid sequence of that protein.
Why are the genes involved in lactose metabolism considered to be an operon? Choose one answer. a. They are under the control of the same promoter. b. They occupy adjacent locations on the E. coli chromosome. c. They are all required for normal ..
Metabolism uses various ways to ensure that 2 opposing pathways do not occur at the equal time. For the following pair of pathways list 2 ways (different cell location, allosteric effector, covalent modification, different intermediate, different ..
Genes a and b are 20 cM apart. An a+b+/a+b+ individual was mated with ab/ab individual.
Hurler syndrome is an autosomal recessive disease caused by a deficiency of the enzyme alpha-L-iduronidase. Affected individuals are mentally retarded.
Explain 4 mechanisms by which the integument helps to prevent infection. In other words, explain either specific actions the integument performs or characteristics of its structure.
When would a mutation be considered "good"?
Explain the process of skeletal muscle contraction, starting from the efferent motor neuron's action potential, and ending with the relaxation of the muscle.
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