The final step of the citric acid cycle oxidizes malate to oxaloacetate and reduces NAD+. What is the purpose of this
step?
a. to replenish the supplies of NAD+
b. to replenish free CoA
c. to regenerate oxaloacetate to attach another acetate molecule
d. to produce ATP by substrate-level phosphorylation
e. to produce ATP by oxidative phosphorylation
ANSWER: c
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(a) reproductive system. (b) head. (c) excretory system. (d) digestive system.
What are the four major classes of chromosomal rearrangements?
A) inversions, duplications, translocations, deletions B) duplications, reciprocal translocations, nonreciprocal translocations, inversions C) deletions, inversions, duplications, point mutations D) translocations, pericentric inversions, paracentric inversions, deletions
All of the following are true of the second law of thermodynamics EXCEPT:
(A) the amount of useful energy decreases. (B) spontaneous changes result in a more uniform distribution of energy. (C) all chemical reactions release more energy than they consume. (D) there is a natural tendency toward greater disorder of the organization of matter. (E) NONE of the above
Osmosis is the transfer of ________ through a semipermeable membrane.
Fill in the blank(s) with correct word