Why Does a DNA Strand Grow Only in the 5

question 38

Multiple Choice

Why does a DNA strand grow only in the 5' to 3' direction?

• A)because DNA polymerases can only add nucleotides to the 3' end of the growing molecule
• B)because DNA polymerase requires the addition of a starter nucleotide at the 5' end
• C)because DNA polymerases can only add nucleotides to the 5' end of the growing molecule
• D)because the DNA molecule only unwinds in the 5' to 3' direction

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