DNA repair enzymes typically find mismatched base pairs by scanning for ____
a. missing hydrogen bonds
b. unsealed nicks in the DNA strands
c. Okazaki fragments
d. extra hydrogen bonds
e. distortions in the DNA double helix
E
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When the water in a plant’s vacuoles is used, it causes
a. a waxy covering to develop. b. increased tissue growth. c. transpiration. d. wilting
Which of the following techniques involves altering an organism’s DNA by inserting a gene
from a different organism?
a. DNA profiling b. genetic engineering c. therapeutic cloning d. DNA fingerprinting
Which of the following accurately compares active hyperemia to reactive hyperemia?
A) One is caused by an increase in metabolites, the other to a decrease in perfusion pressure. B) One is an increase in blood flow, the other is a decrease. C) One is caused by increased metabolic activity, the other in response to an increase in metabolites from an occlusion to blood flow. D) One involves vasodilation, the other vasoconstriction. E) One is an intrinsic response, the other an extrinsic response
The process by which cells acquire specialized forms and functions is called
A. cell differentiation. B. cell replication. C. cell growth. D. cell elasticity. E. None of the choices are correct.