Cholesterol can be remodeled into
a. bile salts.
b. sex hormones.
c. steroids.
d. vitamin D.
e. all of these.
Answer: e
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When utilizing fats as an energy source, the glycerol portion enters the ________ when it has been converted to ________.
A) TCA cycle; pyruvate B) glycolysis; fructose-6-phosphate C) TCA cycle; acetyl CoA D) electron transport system; CoQ E) glycolysis; dihydroxyacetone phosphate
If an unrelated stimulus, such as the ringing of a bell, was presented at the same time as the meat powder, over repeated trials, a dog would salivate in response to the sound of the bell alone. This kind of response is called
A. behavioral learning. B. classical conditioning. C. deviant behavior. D. operant conditioning. E. imprinting.
The occurrence of human identical twins is evidence that:a
all human cells are totipotent. b. no human totipotent cells have been identified. c. the only totitpotent human cell is the one-cell embryo. d. cells in a two-cell human embryo are totipotent. e. cells in a two-cell human embryo are pluripotent.
There are two forms of human earwax: wet and dry. W is a dominant allele that produces wet earwax. In a sample of Swedes, you measure the following genotypes: WW= 810, Ww =180, and ww = 10 What is the allele frequency of W?
a. 10% b. 25% c. 50% d. 90%