Unwinding the double helix to separate the parental strands requires a __________ protein that hydrolyzes ATP to drive the unwinding reaction.
A) primase
B) DNA ligase
C) DNA polymerase III
D) topoisomerase
E) helicase
Ans: E) helicase
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Indicate whether the statement is true or false
Four of the five answers listed below are types of
intercellular connections. Select the exception. a. tight junctions b. gap junctions c. plasmodesmata d. adhering junctions e. plasmalemma
The letter “C” in the above figure represents
a. photosynthetic cell. b. cuticle. c. epidermal cell. d. leaf surface. e. none of these.
Imagine two species of birds with similar beak sizes and diets. Where the two species are allopatric, we would expect that their beak sizes
A. should be more similar than when sympatric. B. should be more different than when sympatric. C. should be smaller than when sympatric. D. should be larger than when sympatric.