Question

1. Which of the following is not true about receptors?

A. They must have affinity for a substrate to bind.

B. They are made of proteins, carbohydrates or lipids.

C. They can become saturated.

D. They are specific

E None of the choices are not true. All of these choices are true about receptors

Answer 1

B. They are made of proteins , carbohydrate or lipids

• Receptors are a chemical structure in which substrates  are bind to it and they send signals , which have effect on body activities.
• Option A is true statement that receptors have high affinity for a substrate to bind , hence it is incorrect
• Receptors are usually made up of protein.
• There are lipid soluble receptors and carbohydrate specific receptors in the body.
• Option C is a true statement that receptors become saturated when all the substrate get binds with it. Hence it is incorrect.
• Option D is a true statement that receptors are highly specific to substrate .Hence it is incorrect.
• Option E is incorrect because option B is a wrong statement .