1. Which of the regions in this diagram of a gene will not be found in the RNA t
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Question
1. Which of the regions in this diagram of a gene will not be found in the RNA transcript?
A. promoter B. RNA coding region C.terminator D. transcription terminator site
2. Which of the following is not true about the 5' cap?
a. the 5' cap facilitates the binding of the ribosome to the mRNA
b. the 5' cap is attached to the mRNA by a 5-5 phosphodiester bond
c. the 5' cap influences the removal of introns
d. the 5' cap is a tag for mRNA degradation
3. The energy source for elongation is
a. CTP b. ATP c. UTP d. GTP
3. The energy source for elongation is
a. CTP b. ATP c. UTP d. GTP
Explanation / Answer
Ans1 :- (A) Promoter.
Ans 2:- (d) the 5'cap is a tag for mRNA degradation.
Explaination:- the 5'caping is done to protect the RNA from undergoing degration in the cytoplasm.
Ans 3:- (d) GTP.
Explaination;- During elongation process the tRNA is delivered as a complex with EF-Tu and GTP, then translocase (EF-G) with the energy from GTP, moves the one ribosome one codon along the mRNA thus ejecting the uncharged tRNA and transferred the ribose peptide from the mRNA.
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