Multiple Choice
What function does the enzyme DNA ligase perform in DNA replication?
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14. DNA Synthesis
DNA Polymerases
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How does RNA polymerase differ from DNA polymerase?
A
RNA polymerase synthesizes RNA, while DNA polymerase synthesizes DNA.
B
RNA polymerase requires a primer to initiate synthesis, while DNA polymerase does not.
C
RNA polymerase is involved in DNA replication, while DNA polymerase is involved in transcription.
D
RNA polymerase can proofread its work, while DNA polymerase cannot.
Verified step by step guidance1
Understand the roles of RNA polymerase and DNA polymerase: RNA polymerase is responsible for synthesizing RNA from a DNA template during the process of transcription, while DNA polymerase synthesizes DNA from a DNA template during DNA replication.
Recognize the requirement of a primer: DNA polymerase requires a primer to initiate DNA synthesis, whereas RNA polymerase does not require a primer to start RNA synthesis.
Identify the processes involved: RNA polymerase is involved in transcription, which is the process of copying a segment of DNA into RNA. DNA polymerase is involved in DNA replication, which is the process of making an identical copy of a DNA molecule.
Consider proofreading abilities: DNA polymerase has proofreading abilities, meaning it can correct errors during DNA synthesis. RNA polymerase, on the other hand, generally lacks this proofreading ability, leading to a higher error rate in RNA synthesis.
Clarify any misconceptions: Ensure that you understand that RNA polymerase is not involved in DNA replication, and DNA polymerase is not involved in transcription. These enzymes have distinct roles in the cell.
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