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Biology - Chapter 16

Question:

A new DNA strand elongates only in the 5' to 3' direction because

A) DNA polymerase begins adding nucleotides at the 5' end of the template.

B) Okazaki fragments prevent elongation in the 3' to 5' direction.

C) the polarity of the DNA molecule prevents addition of nucleotides at the 3' end.

D) replication must progress toward the replication fork.

E) DNA polymerase can only add nucleotides to the free 3' end.

Answer:

E) DNA polymerase can only add nucleotides to the free 3' end.
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Last update by mayur on 04/07/2014
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Biology   Chapter 16
Biology - Chapter 16
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Free Flashcard From Biology - Chapter 16
Question: A new DNA strand elongates only in the 5' to 3' direction because A) DNA polymerase begins adding nucleotides at the 5' end of the template. B) Okazaki fragments prevent elongation in the 3' to 5' direction. C) the polarity of the DNA molecule prevents addition of nucleotides at the 3' end. D) replication must progress toward the replication fork. E) DNA polymerase can only add nucleotides to the free 3' end.
Answer: E) DNA polymerase can only add nucleotides to the free 3' end.