A New DNA Strand Elongates Only in the 5' to 3

question 45

Multiple Choice

A new DNA strand elongates only in the 5' to 3' direction because

• A) DNA polymerase begins adding nucleotides at the 5' end of the template.
• B) Okazaki fragments prevent elongation in the 3' to 5' direction.
• C) the polarity of the DNA molecule prevents addition of nucleotides at the 3' end.
• D) replication must progress toward the replication fork.
• E) DNA polymerase can only add nucleotides to the free 3' end.

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Definitions:

Genetically Modified Food

Food derived from organisms whose DNA has been modified using genetic engineering techniques, often to enhance yield, resistance to pests, or nutritional value.

Genetically Modified Organisms

Organisms whose genetic material has been artificially manipulated through genetic engineering techniques.

Life Extension

The practice of attempting to extend human life, either by increasing the maximum lifespan or the average lifespan, through medical, technological, or lifestyle changes.

Aging

The process of becoming older, characterized by gradual deterioration of physical and cognitive function over time.