Question

Assertion (A): Using rDNA technology human insulin can be produced into bacterial cells.

Reason (R): The chains A and B polypeptides of the human insulin are produced separately, extracted and then combined by creating disulphide bonds to produce human insulin.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

Explanation:

Recombinant DNA technology enables human insulin to be produced using bacterial cells. Producing the A and B chains separately and joining them describes the method of assembling insulin, rather than explaining why bacteria can produce it.