Which of the following is the enzyme that replaces the RNA nucleotides in a primer with DNA nucleotides?

A) DNA polymerase III
B) DNA polymerase I
C) primase
D) helicase


Ans: B) DNA polymerase I

Biology & Microbiology

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In prokaryotes, repressor proteins: (Select all correct choices)

A. bind with DNA and prevent transcription. B. bind with activators and prevent transcription. C. are part of the mechanism of positive regulation. D. are part of the mechanism of negative regulation.

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How would you calculate the net primary productivity of an ecosystem?

What will be an ideal response?

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Many factors are believed to reduce songbird breeding success in fragmented habitats. Select the

exception.

a. brood parasitism by cowbirds b. nest predation by blue jays c. lack of necessary habitat types d. nest predation by domestic cats e. increased connections between habitats

Biology & Microbiology

Regenerating ____ allows glycolysis in

fermentation to continue.

a. NADH b. ATP c. carbon dioxide d. pyruvate e. glucose

Biology & Microbiology