Molecular Genetics: Eukaryotic Protein Synthesis
Questions based on Lecture 1. Of Molecular Genetics: Protein Synthesis with Dr Sealy-Lewis.
- 1.Which stage of protein synthesis makes promoting Eukarotic genes in Prokaryotes difficult?
- A.
Transcription
- B.
Intiation
- C.
Elongation
- D.
Termination
- 2.Prokaryotic intiation phase requires?
- A.
5'Cap
- B.
Removal of Introns
- C.
Removal of Extrons
- D.
Shine-Dalgarno sequence
- E.
Addition of Poly AAA tail
- 3.Eukaryotic intiation phase requires?
- A.
Shine-Dalgarno Sequence
- B.
Removal of Introns
- C.
5' Cap
- D.
Removal of Exons
- E.
Addition of Poly AAA tail
- 4.What are the functions of the 5' Cap?
- A.
Regulation of nuclear export
- B.
Prevention of degradation by exonucleases
- C.
Promotion of translation
- D.
Promotion of 5' intron excision
- E.
Tag for degradation
- F.
Ligation of exons
- G.
Promotion of degradation by exonucleases
- 5.Intiation in prokaryotes requires only 3 factors whereas eukaryotes use 13?
- A.
True
- B.
False
- 6.AUG is the triplet code for Cysteine?
- A.
True
- B.
False
- 7.What are the stop codons?
- A.
UAG
- B.
UAA
- C.
UGA
- D.
AUG
- E.
AAG
- 8.What is the start codon?
- A.
AUG - Methionine
- B.
ACA - Proline
- C.
AGU - Serine
- D.
AAU - Asparagine
- 9.Elongation requires GTP?
- A.
True
- B.
False
- 10.Imet stands for?
- A.
Intiator methionine
- B.
Inducer methionine
- C.
Indigo methionine
- 11.Which of the following is a prokaryotic inhibitor?
- A.
Cycloheximide
- B.
Ricin
- C.
Abrin
- D.
Streptomycin
- 12.Which of the following is an Eukaryotic inhibitor?
- A.
Ricin
- B.
Erythromycin
- C.
Tetracyclin
- D.
Streptomycin
- 13.Polycistronic mRNA is mRNA that encodes for multiple different proteins.
- A.
True
- B.
False
- 14.Ubiquitin tagging prevents degradation by proteosomes?
- A.
True
- B.
False
- 15.Which of the following statements are true regarding the start codon?
- A.
It is found in the Kozak sequence
- B.
It is the first codon in the scanning process
- C.
It codes for Methionine
- D.
It codes for Amber
- E.
It can be up to 1000 bases from the cap
- 16.Ribosomes are made of ________
- A.
60s + 40s subunits
- B.
40s + 40s subunits
- C.
20s + 40s subunits
- 17.Scanning is the process by which ___________
- A.
The 40s subunit finds the stop codon
- B.
The 40s subunit finds the start codon
- C.
The 40s subunit finds an ATP source
Questions: 10 | Attempts: 11403 | Last updated: Dec 31, 2012
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Sample QuestionWhat is produced during transcription?
Questions: 18 | Attempts: 3837 | Last updated: Sep 9, 2020
-
Sample QuestionIntrons are
Questions: 9 | Attempts: 3295 | Last updated: Aug 31, 2020
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Sample QuestionWhich of the following is not a nucleic acid?
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