Multiple choice

Which of the following statements is/are correct regarding DNA?

P. Enzyme required for removing RNA primer during DNA replication is DNA primase. Q. The enzyme DNA polymerase can work only in 5’ → 3’ direction. R. The enzyme that cuts the bonds of DNA molecule at the origin of replication is restriction endonuclease. S. The enzyme required to release the tension imposed by uncoiling of strands is DNA gyrase.

  1. P and Q

  2. P and S

  3. Q and R

  4. R and S

  5. Q and S
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct answer. The enzyme that cuts the bonds of DNA molecule at the origin of replication is restriction endonuclease. The enzyme required to release the tension imposed by uncoiling of strands is DNA gyrase.

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