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Q. No.Consider the given two statements:
Assertion (A):
DNA cannot pass through cell membranes.
Reason (R):
DNA is a hydrophobic molecule.
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.
Both (A) and (R) are False
Subtopic: Separation and Isolation of DNA fragments |
68%
From NCERT
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Consider the given two statements:
| Assertion (A): | The discovery of restriction enzymes led to the birth of recombinant DNA technology as a discipline. |
| Reason (R): | Restriction enzymes help in the precise cleavage of DNA at specific recognition sites, facilitating the insertion of foreign genes into plasmids. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation for (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation for (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Restriction Enzymes - Main Enzymes |
88%
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Restriction enzymes are named:
| 1. | after the scientists who discover them. |
| 2. | based on the bacteria from which they are derived. |
| 3. | after the bacteriophage whose DNA is cut by them. |
| 4. | There is no convention or principles for naming restriction enzymes. |
Subtopic: Restriction Enzymes - Main Enzymes |
84%
From NCERT
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Subtopic: Restriction Enzymes - Main Enzymes |
84%
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The process of extracting a substance that is adsorbed to another by washing it with a solvent is called as:
| 1. | Chelation | 2. | Centrifugation |
| 3. | Elution | 4. | Hybridisation |
Subtopic: Separation and Isolation of DNA fragments |
78%
From NCERT
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The ‘sticky ends’ produced in the fragments of DNA produced by some restriction enzymes are composed of:
| 1. | methyl groups | 2. | telomeres |
| 3. | unpaired bases | 4. | Guanine rich repeats |
Subtopic: Restriction Enzymes - Main Enzymes |
71%
From NCERT
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Maintenance of sterile ambience in chemical engineering processes to enable growth of only the desired microbe/eukaryotic cell in large quantities for the manufacture of biotechnological products like antibiotics, vaccines, enzymes, etc is called as:
1. Genetic engineering
2. Bioprocess engineering
3. Gene technology
4. Biopharming
1. Genetic engineering
2. Bioprocess engineering
3. Gene technology
4. Biopharming
Subtopic: Introduction & History: II |
85%
From NCERT
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Identify the correct statements:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | Herbert Boyer performed studies on a couple of restriction enzymes of the E.coli bacterium with especially useful properties. |
| II: | Stanley Cohen developed a method of removing plasmids from the bacterial cell and then reinserting them in other bacterial cells. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Introduction & History: I |
73%
From NCERT
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Biotechnology has been defined as ‘the integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services, by:
1. EFB
2. American Chemical Society
3. GEAC
4. NCBI
1. EFB
2. American Chemical Society
3. GEAC
4. NCBI
Subtopic: Introduction & History: I |
90%
From NCERT
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Consider the given two statements:
| Assertion (A): | The genes encoding resistance to antibiotics such as ampicillin, chloramphenicol, tetracycline or kanamycin, etc., are considered useful selectable markers for E. coli. |
| Reason (R): | The normal E. coli cells do not carry resistance against any of these antibiotics. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True; (R) is False |
| 3. | (A) is False; (R) is False |
| 4. | Both (A) and (R) are True but (R) does not correctly explain (A). |
Subtopic: Selectable Markers: I |
54%
From NCERT
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