What happens to anaerobic organisms when
they are exposed to oxygen?
a. they become anaerobic
b. they die
c. they increase their metabolic rate
d. they start rapidly reproducing
e. nothing happens to them
B
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Epithelial tissue is found:
A. on the outer surface of the body. B. lining the gastrointestinal tract. C. lining the lungs. D. lining the blood vessels. E. All of these choices are correct.
What is the function of the MutS protein in methyl-directed mismatch repair?
A. To excise the mismatched basepair. B. To find mismatches. C. To directly bind the DNA polymerase. D. To make a cut in the nonmethylated DNA strand. E. To digest the nonmethylated DNA strand.
In humans, the thirst center is located in the
a. adrenal cortex. b. hypothalamus. c. anterior pituitary. d. glomerulus
Atoms that have the same number of protons but differ in the number of neutrons are called ________
Fill in the blank(s) with correct word