Question

In comparing DNA replication with RNA transcription in the same cell, which of the following is true only of replication?

A. It uses RNA polymerase.
B. The entire template molecule is represented in the product.
C. The process occurs in the nucleus of a eukaryotic cell.
D. It makes a new molecule from its 5' end to its 3' end.
E. The process is extremely fast once it is initiated.

Answer 1

Only DNA replication ensures that the entire template molecule is represented in the product, while RNA transcription transcribes only specific segments of DNA.

Step-by-step explanation:

In comparing DNA replication with RNA transcription in the same cell, the statement that is true only of replication is that the entire template molecule is represented in the product. This is because during DNA replication, the entire DNA molecule is duplicated to produce two identical DNA strands. Conversely, in RNA transcription, only segments of DNA are transcribed into RNA, meaning not the entire DNA sequence is represented in the RNA product. Also, DNA replication uses DNA polymerase, not RNA polymerase, and occurs in the nucleus of eukaryotic cells where it replicates the whole genome before cell division. Unlike RNA polymerase, DNA polymerase synthesizes new molecules from the 5' end to the 3' end and requires a primer to initiate the process.