DNA Polymerase Can Catalyze a Dehydration Synthesis Reaction Only at the 3

question 27

Multiple Choice

DNA polymerase can catalyze a dehydration synthesis reaction only at the 3' carbon of the daughter strand of DNA. This means that _______.

• A) the antiparallel nature of the parent molecules determine that the leading strand must be grown in fragments away from the fork and the lagging strand is synthesized continuously
• Toward the fork
• B) Okazaki fragments extend toward the replication fork as the parent strands are unzipped by helicase
• C) since the strands are antiparallel, one strand will grow toward the fork as it opens, and the other strand will grow in fragments away from the fork
• D) the leading and lagging strands extend in the 3' - 5' direction toward the replication fork as the nucleotide bases are exposed

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Definitions:

Endergonic

Describes a chemical reaction that requires energy to be absorbed from its surroundings, not occurring spontaneously.

Open System

An entity that exchanges energy with its surroundings. Compare with closed system.

Energy Content

The total amount of energy available in a food item or fuel source, typically measured in calories or joules.

Organism

Any living system consisting of one or more cells.