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Multiple Choice
Which of the following is characteristic of transcription in eukaryotes but not in prokaryotes?
A
The use of a single RNA polymerase for all types of RNA
B
The absence of a 5' cap on mRNA
C
The presence of introns that require splicing
D
Transcription and translation occur simultaneously
Verified step by step guidance
1
Understand the process of transcription in eukaryotes: Transcription is the process by which the genetic information in DNA is copied into RNA. In eukaryotes, this process involves several complex steps and modifications.
Identify the key differences between eukaryotic and prokaryotic transcription: Eukaryotic transcription involves multiple RNA polymerases, whereas prokaryotes typically use a single RNA polymerase for all types of RNA.
Recognize the role of introns in eukaryotic transcription: Eukaryotic genes often contain non-coding sequences called introns that are transcribed into RNA but must be removed through a process called splicing before the RNA can be translated into protein.
Consider the modifications to mRNA in eukaryotes: Eukaryotic mRNA undergoes several modifications, including the addition of a 5' cap and a poly-A tail, which are not present in prokaryotic mRNA.
Note the separation of transcription and translation in eukaryotes: In eukaryotes, transcription occurs in the nucleus, and translation occurs in the cytoplasm, whereas in prokaryotes, these processes can occur simultaneously.