- 1(current)
Q. No.Regarding the components of an operon, an operator is:
| 1. | another name for the terminator of a gene |
| 2. | a DNA site bound by repressor proteins |
| 3. | a protein that coordinates gene expression |
| 4. | binding site for the RNA polymerase |
Subtopic: Â Gene Regulation: Lac Operon |
 50%
Level 3: 35%-60%
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Hints
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In an E.coli strain i gene gets mutated and its product cannot bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome ?
1. RNA polymerase will bind the promoter region
2. Only z gene will get transcribed
3. z, y, a genes will be transcribed
4. z, y, a genes will not be translated
1. RNA polymerase will bind the promoter region
2. Only z gene will get transcribed
3. z, y, a genes will be transcribed
4. z, y, a genes will not be translated
Subtopic: Â Gene Regulation: Lac Operon |
Level 3: 35%-60%
NEET - 2022
Hints
Consider the given two statements:
| Assertion (A): |
The lac operon in E. coli is a negative inducible operon. |
| Reason (R): |
Lactose is the inducer of the lac operon in E. coli. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: Â Gene Regulation: Lac Operon |
 56%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
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