2. How many times is a replication origin used during a cell cycle? (A) Once (B)twice (C)five times (D) twenty times

2. How many times is a replication origin used during a cell cycle?
(A) Once
(B)twice
(C)five times
(D) twenty times

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B1 · 2025/03/20

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How many times is a ...

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5.Why does a DNA strand grow only in the 5' to 3' direction? (A)because DNA polymerase can only add nucleotides to the 3' end of the growing molecule. (B)because DNA polymerase can only add nucleotides to the 5' end of the growing molecule. (C)because the DNA molecule only unwinds in the 5' to 3' direction. (D)because DNA polymerase requires the addition of a starter nucleotide at the 5' end.

2. How many times is a replication origin used during a cell cycle?
(A) Once
(B)twice
(C)five times
(D) twenty times

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