14. What biomolecule delivers the aminoacyl-tRNA to the âA siteâ of the E. coli ribosome? A. elongation factor-G B. initiation factor-1 C. elongation factor-Ts D. initiation factor-3 E. elongation factor-Tu
What is DNA gyrase?
A. a bacterial type II topoisomerase
B. a bacterial type I topoisomerase
C. a bacterial helicase
D. a eukaryotic helicase
E. None of the answers is correct.
16.
What type of topoisomerase can introduce supercoils?
A. All topoisomerase can introduce supercoils.
B. type I
C. type IV
D. type II
E. type III
17.
What sequence allows bacterial ribosomes to identify the CORRECT AUG start codon?
A. Ori
B. -35 sequence
C. TATA box
D. poly(A) tail
E. Shine-Dalgarno
hat name is given to the region of RNA synthesis that contains the DNA, RNA, and RNA polymerase?
A. transcriptosome
B. transcription complex
C. transcription bubble
D. replicon
E. transcription fork
19.
What is the minimum length of time required for the synthesis by E. coli polymerase of an mRNA encoding a 100-kd protein?
A. 164 seconds
B. 55 seconds
C. less than 3 seconds
D. 18 seconds
E. 6 seconds
20.
What is the direction of translation of mRNA?
A. bidirectional
B. 3' to 5'
C. 5' to 3' in eukaryotes, 3' to 5' in bacteria
D. 5' to 3'
E. 5' to 3' in bacteria, 3' to 5' in eukaryotes
14. What biomolecule delivers the aminoacyl-tRNA to the âA siteâ of the E. coli ribosome? A. elongation factor-G B. initiation factor-1 C. elongation factor-Ts D. initiation factor-3 E. elongation factor-Tu
What is DNA gyrase?
| A. | a bacterial type II topoisomerase | |
| B. | a bacterial type I topoisomerase | |
| C. | a bacterial helicase | |
| D. | a eukaryotic helicase | |
| E. | None of the answers is correct. |
16.
What type of topoisomerase can introduce supercoils?
| A. | All topoisomerase can introduce supercoils. | |
| B. | type I | |
| C. | type IV | |
| D. | type II | |
| E. | type III |
17.
What sequence allows bacterial ribosomes to identify the CORRECT AUG start codon?
| A. | Ori | |
| B. | -35 sequence | |
| C. | TATA box | |
| D. | poly(A) tail | |
| E. | Shine-Dalgarno |
hat name is given to the region of RNA synthesis that contains the DNA, RNA, and RNA polymerase?
| A. | transcriptosome | |
| B. | transcription complex | |
| C. | transcription bubble | |
| D. | replicon | |
| E. | transcription fork |
19.
What is the minimum length of time required for the synthesis by E. coli polymerase of an mRNA encoding a 100-kd protein?
| A. | 164 seconds | |
| B. | 55 seconds | |
| C. | less than 3 seconds | |
| D. | 18 seconds | |
| E. | 6 seconds |
20.
What is the direction of translation of mRNA?
| A. | bidirectional | |
| B. | 3' to 5' | |
| C. | 5' to 3' in eukaryotes, 3' to 5' in bacteria | |
| D. | 5' to 3' | |
| E. | 5' to 3' in bacteria, 3' to 5' in eukaryotes |
Unlock all answers
