Benign tumors can be life-threatening when they form in which tissue?
a. skin
b. large intestines
c. kidneys
d. brain
e. liver
ANSWER: d
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What is the function of the enzyme DNA polymerase?
A. to build a strand of DNA using DNA as a template B. to build a strand of DNA using a polypeptide as a template C. to build a strand of mRNA using DNA as a template D. to build a strand of mRNA using mRNA as a template E. to build a polypeptide using DNA as a template
The gaseous plant hormone is
a. auxin. b. gibberellin. c. cytokinin. d. abscisic acid. e. ethylene.
The outer boundaries of Miller and Urey's laboratory-created vesicles are most similar to
A) complete cells. B) cell membranes. C) bacteria. D) amino acids. E) RNA.
Carotid bodies and aortic bodies detect
A. the stretching of the lungs. B. tissue oxygen levels. C. blood oxygen levels. D. blood pH. E. the residual volume.