Why Is DNA Ligase Most Active on the Lagging Strand

question 75

Multiple Choice

Why is DNA ligase most active on the lagging strand during DNA replication?

• A) The lagging strands contain more short DNA segments, which are joined together by DNA ligase, than the leading strand.
• B) The lagging strand is synthesized more slowly, and DNA ligase speeds up the DNA polymerase.
• C) The lagging strand synthesizes DNA in the 3' ->5' direction.
• D) The lagging strand requires DNA ligase to couple the RNA primer to the Okazaki fragments.
• E) DNA ligase performs the function of RNA primase on the lagging strand.

---

Definitions:

Connector

A device used to join electrical terminations and create an electrical circuit.

USB 3.0

A standardized port that supports speeds up to 5 Gb/s, a maximum of 0.9 amps, and 5 VDC.

Cable Length

The physical length of a cable which can affect signal strength and quality in communications and power transmission.

Analog Signal

Used mainly by older video ports, modems, and sound devices; its signal strength varies in amplitude.