Question

question 87
1.5 pts
in comparing dna replication with rna transcription in the same cell, which of the following is true only of replication?

it uses rna polymerase.
it makes a new molecule from its 5 end to its 3 end.
the process is extremely fast once it is initiated.
the entire template molecule is represented in the product.

Explanation:

• Analyze each option:
• "It uses RNA polymerase": DNA replication uses DNA polymerase, RNA transcription uses RNA polymerase. So this is true for transcription, not replication. Eliminate.
• "It makes a new molecule from its 5' end to its 3' end": Both DNA replication (new DNA strand) and RNA transcription (new RNA strand) synthesize in the 5' to 3' direction. Eliminate.
• "The process is extremely fast once it is initiated": Both replication and transcription are fast processes once initiated. Eliminate.
• "The entire template molecule is represented in the product": In DNA replication, the entire DNA template (both strands, eventually) is replicated to form two complete DNA molecules (each with one original and one new strand). In RNA transcription, only a specific gene (a segment of the DNA template) is transcribed into RNA, not the entire template. So this is true only for DNA replication.

Answer:

The entire template molecule is represented in the product.