Which of the following is NOT a component of DNA?
a. deoxyribose
b. phosphate
c. adenine
d. uracil
e. guanine
ANSWER: d
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Differences in domesticated animals over relatively short periods of time most likely occur through:
A. natural selection B. artificial selection C. adaptation D. experimental selection E. evolution
To process information, postsynaptic neurons often add up simultaneous signals from several presynaptic neurons. Which structure and process allow them to do so? A. axons; temporal summation
A. axons; temporal summation B. axons; spatial summation C. dendrites; temporal summation D. dendrites; spatial summation
The inferior vena cava moves blood from the ____
a. head only b. forelimbs only c. head and forelimbs d. abdominal organs only e. abdominal organs and hind limbs
Post-translational controls of gene expression
include a. activation of enzymes. b. inhibition of enzymes. c. stabilization of enzymes. d. allosteric enzyme control. e. all of these