Which Sentence Best Explains Why, During DNA Replication, DNA Ligase

question 20

Multiple Choice

Which sentence best explains why, during DNA replication, DNA ligase is most active on the lagging strand?

• A) The lagging strand requires DNA ligase to couple the RNA primer to the Okazaki fragments.
• B) The lagging strand synthesizes DNA in the 3'
• C) The lagging strand is synthesized more slowly, and DNA ligase speeds up the DNA polymerase.
• D) The lagging strand contains more short DNA segments than the leading strand, and these short segments are joined together by DNA ligase.

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Definitions:

Phosphate

A chemical compound containing the phosphate ion, PO4^3-, crucial for energy transfer and storage within biological organisms.

ATP

Adenosine triphosphate, a molecule that stores and transfers energy within cells, powering many cellular processes.

Ion Channel-linked Receptor

A type of membrane receptor that can open or close an ion channel in response to the binding of a signaling molecule, thus affecting cell function.

Nicotinic Acetylcholine Receptor

A type of receptor found in the nervous system that responds to the neurotransmitter acetylcholine, playing a key role in muscle contraction and many other physiological functions.