The body’s biological clock is associated with the activity of which hormone?
a. melatonin
b. ANP
c. ADH
d. FSH
e. prolactin
ANSWER: a
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If all conditions of Hardy–Weinberg equilibrium are met,
(a) allele frequencies move closer to each generation. (b) allele frequencies change in the direction predicted by natural selection. (c) allele frequencies stay the same. (d) all allele frequencies increase.
Answer the following statements true (T) or false (F)
1. The modification of a limb that was used for walking in a preexisting ancestor to one that is used as a wing for a species today is called proteomics. 2. A bacterial infection such as pneumonia is most likely caused by organisms derived from the kingdom fungi. 3. All genetic mutations are harmful to an organism. 4. Vertical evolution, whereby living organisms evolve from a common ancestor ("tree of life"), is the only mechanism of evolution on Earth.
"Gluconeogenesis" is the process in which
A. glucose levels are decreased in the blood through the breakdown of carbohydrates. B. glucose levels are decreased in the blood by synthesis of glucose from noncarbohydrate sources. C. glucose levels are increased in the blood by synthesis of glucose from noncarbohydrate sources. D. amino acids are generated for processes like building muscle tissue. E. glucose levels are increased in the blood through the breakdown of carbohydrates.
In mismatch repair on newly replicated DNA, enzymes distinguish between old and newly replicated DNA strands based on the fact that newly replicated DNA strands are ________-methylated relative to older DNA.
Fill in the blank(s) with the appropriate word(s).