Ncert Exercises & Solutions

Assertion (A) Chemical messenger gives a message to the cell without entering the cell.

Reason (R) Chemical messenger is received at the binding site of receptor proteins.

1. Assertion and reason both are correct statements but reason does not explain assertion.

2. Assertion and reason both are correct and reason explains the assertion.

3. Both assertion and reason are wrong statements.

4. Assertion is the correct statement reason is the wrong statement.

Assertion and reason both are correct and reason explains the assertion.

Chemical messenger gives a message to the cull without entering the cell because it is received at the binding site of receptor proteins.