Which of the following statements is TRUE? 1)DNA polymerase is capable of synthe

Question

Which of the following statements is TRUE?

1)DNA polymerase is capable of synthesizing DNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group

2)Primase, an RNA polymerase, is capable of synthesizing RNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group

3)Only the lagging strand requires the enzyme primase

4)DNA polymerase incorporates new nucleotides into the growing DNA molecule by forming hydrogen bonds between complementary nucleotides on opposite strands of the double helix

5)Once helicase has initially opened up the DNA double helix, it dissociates from the molecule allowing single stranded binding proteins and DNA polymerase to bind

Explanation / Answer

1)DNA polymerase is capable of synthesizing DNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group ----------------> FALSE

2) Primase, an RNA polymerase, is capable of synthesizing RNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group --------------> TRUE (Primase is an RNA polymerase that reads DNA and synthesize complementary RNA strand (mRNA)

3)Only the lagging strand requires the enzyme primase -------------> FALSE (Both leading and lagging strands need primase).

4)DNA polymerase incorporates new nucleotides into the growing DNA molecule by forming hydrogen bonds between complementary nucleotides on opposite strands of the double helix -------------> FALSE

5)Once helicase has initially opened up the DNA double helix, it dissociates from the molecule allowing single stranded binding proteins and DNA polymerase to bind ------------> FALSE

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