Molecular Biology Quiz
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BIO
Instructions BIO
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This assessment is worth 30 points. 1. The Shine-Dalgarno sequence is a (1 point) a. b. prokaryotic mRNA sequence that binds lF-3. prokaryotic mRNA sequence that binds the 16S rRNA of the small ribosomal subunit. prokaryotic mRNA sequence that binds the 16S rRNA of the large ribosomal subunit. eukaryotic rRNA sequence that binds the AUG codon of mRNA. None of the above are correct.
c.
d. e.
2. The initiation phase of prokaryotic translation ends as the GTP molecule bound to ___________ is hydrolyzed to GDP and Pi. (1 point) a. b. c. d. e. IF-1 IF-2 IF-3 IF-4 None of the above are correct.
3. During the elongation phase of prokaryotic translation the aminoacyl-tRNA must first bind __________ before it can be positioned in the A site. (1 point) a. b. EF-Ts EF-Tu
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3/16/2012 2:28 AM
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c. d. e.
EF-TS-GDP EF-Ts-GTP EF-Tu-GTP
4. ________ is an enzymatic activity that hydrolyzes the bond linking the completed polypeptide chain and the P site tRNA. (1 point) a. b. c. d. e. RF-1 EF-G Peptidyl transferase Ribosomal esterase Signal peptidase
5. Prominent prokaryotic posttranslational modifications include all of the following except __________. (1 point) a. b. c. d. e. glycosylation methylation proteolytic processing prenylation phosphorylation
6. In prokaryotes most of the control of protein synthesis occurs at the level of ________. (1 point) a. b. c. d. translation transcription replication reverse transcription
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3/16/2012 2:28 AM
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e.
posttranslational modification
7. The enzymatic activities coded for by
http://hawwat.pageout.net/page.dyn/instructor/assessment/quick_assessme...
Quick-Assessment Review
BIO
Instructions BIO
Go to : http://
This assessment is worth 30 points. 1. The Shine-Dalgarno sequence is a (1 point) a. b. prokaryotic mRNA sequence that binds lF-3. prokaryotic mRNA sequence that binds the 16S rRNA of the small ribosomal subunit. prokaryotic mRNA sequence that binds the 16S rRNA of the large ribosomal subunit. eukaryotic rRNA sequence that binds the AUG codon of mRNA. None of the above are correct.
c.
d. e.
2. The initiation phase of prokaryotic translation ends as the GTP molecule bound to ___________ is hydrolyzed to GDP and Pi. (1 point) a. b. c. d. e. IF-1 IF-2 IF-3 IF-4 None of the above are correct.
3. During the elongation phase of prokaryotic translation the aminoacyl-tRNA must first bind __________ before it can be positioned in the A site. (1 point) a. b. EF-Ts EF-Tu
1 of 10
3/16/2012 2:28 AM
PageOut® Quick-Assessment Preview
http://hawwat.pageout.net/page.dyn/instructor/assessment/quick_assessme...
c. d. e.
EF-TS-GDP EF-Ts-GTP EF-Tu-GTP
4. ________ is an enzymatic activity that hydrolyzes the bond linking the completed polypeptide chain and the P site tRNA. (1 point) a. b. c. d. e. RF-1 EF-G Peptidyl transferase Ribosomal esterase Signal peptidase
5. Prominent prokaryotic posttranslational modifications include all of the following except __________. (1 point) a. b. c. d. e. glycosylation methylation proteolytic processing prenylation phosphorylation
6. In prokaryotes most of the control of protein synthesis occurs at the level of ________. (1 point) a. b. c. d. translation transcription replication reverse transcription
2 of 10
3/16/2012 2:28 AM
PageOut® Quick-Assessment Preview
http://hawwat.pageout.net/page.dyn/instructor/assessment/quick_assessme...
e.
posttranslational modification
7. The enzymatic activities coded for by