| Column-I | Column -II | ||
| a. | Biosynthetic stage | (i) | Increased surface area for oxygen transfer |
| b. | Downstream processing | (ii) | Large-scale production in the fermenter |
| c. | Sparged stirred-tank bioreactor |
(iii) | With foam breaker and flat bladed impeller |
| d. | Simple stirred-tank bioreactor |
(iv) | Separation and purification |
| Assertion(A): | Foreign DNA can be inserted into host cells by heat shock treatment, microinjection and biolistics. |
| Reason(R): | The chromogenic substrate used in blue-white screening of recombinant DNA is X-gal. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |