Question Detail

BIO 101 BIO 101 Past Questions Objective Question
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Question

What is the action of the enzyme DNA ligase?
Options
A DNA is broken up at specific Sites
B DNA fragments are joined together
Correct Answer
C DNA replication occurs
D DNA transcription occurs
Correct Answer

Option B is the correct answer.

Detailed Explanation

DNA ligase is a crucial enzyme that catalyzes the formation of a phosphodiester bond between the 3'-hydroxyl and 5'-phosphate ends of DNA fragments. It is essential for joining Okazaki fragments on the lagging strand during DNA replication and for sealing nicks in DNA during repair and recombination.

Hint

The name 'ligase' gives a clue. What does it mean to 'ligate' something?

Question Info

Course: BIO 101
Topic: BIO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 1134 of 2556
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