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  • Assertion (A): Chemical messenger gives message to the cell without entering the cell. Reason (R): Chemical messenger is received at the binding site of receptor proteins.

In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices:

(i) Assertion and reason both are correct statement but reason does not explain assertion.
(ii) Assertion and reason both are correct and reason explains the assertion.
(iii) Both assertion and reason are wrong statement.
(iv) Assertion is correct statement reason is wrong statement.
(v) Assertion is wrong statement reason is correct statement.

Assertion (A): Chemical messenger gives message to the cell without entering the cell.
Reason (R): Chemical messenger is received at the binding site of receptor proteins.

Answers (1)

(ii) while transferring messages to cells, the chemical messengers do not enter in the cell as they attach to the active site of receptors in the cell membrane and detach after message transmission.

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Gurleen Kaur

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