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Multiple Choice
Which of the following is used in prokaryotic translation but not in eukaryotic translation?
A
Shine-Dalgarno sequence
B
Poly-A tail
C
Kozak sequence
D
5' cap
Verified step by step guidance
1
Understand the difference between prokaryotic and eukaryotic translation. Prokaryotic translation occurs in the cytoplasm and does not involve a nucleus, while eukaryotic translation occurs in the cytoplasm but starts in the nucleus.
Identify the role of the Shine-Dalgarno sequence. This sequence is a ribosomal binding site in prokaryotic mRNA, located upstream of the start codon, and is crucial for the initiation of translation.
Recognize that the Shine-Dalgarno sequence is specific to prokaryotes. It helps align the ribosome with the start codon on the mRNA, ensuring proper translation initiation.
Compare the Shine-Dalgarno sequence with the other options: the Poly-A tail, Kozak sequence, and 5' cap. The Poly-A tail and 5' cap are features of eukaryotic mRNA, while the Kozak sequence is involved in eukaryotic translation initiation.
Conclude that the Shine-Dalgarno sequence is used in prokaryotic translation but not in eukaryotic translation, distinguishing it from the other options provided.