Which of the following statements are incorrect about receptor proteins? I. Majority of receptor proteins are embedded in the cell membranes. II. The active site of receptor proteins opens on the inside region of the cell. III. Chemical messengers are received at the binding sites of receptor proteins. IV. Shape of receptor does not change during attachment of messenger. Choose the option with all incorrect statements.

Question

Which of the following statements are incorrect about receptor proteins? I. Majority of receptor proteins are embedded in the cell membranes. II. The active site of receptor proteins opens on the inside region of the cell. III. Chemical messengers are received at the binding sites of receptor proteins. IV. Shape of receptor does not change during attachment of messenger. Choose the option with all incorrect statements. (A) I and II (B) III and IV (C) I and III (D) II and IV

Tardigrade Admin · Accepted Answer

Receptors are proteins that are crucial to body's communication process. Majority of these are embedded in the cell membrane in
such a way that their small part possessing active site projects out of
the surface of the membrane and opens on the outside region of the
cell membrane. Binding sites (active site) of receptor proteins
recieves the chemical messengers. In order to accommodate the
messenger, shape of the receptor site changes.