Which of the following is an incorrect statement

1. Hormones bind to specific proteins located in the target tissues only.

2. Receptors for hormones can only be present on the cell membrane

3. Each receptor is specific to one hormone only

4. Nuclear receptors are intracellular receptors

The binding of a hormone to its receptor leads to

1. formation of the hormone-receptor complex

2. leads to biochemical changes in the target tissue

3. affects target tissue metabolism

4. All of these

Which one of the following pairs of hormones are the examples of those that can easily

pass through the cell membrane of the target cell and bind to a receptor inside it (mostly

in the nucleus)?

1. Insulin and glucagon

2. Thyroxin and insulin

3. Somatostatin and oxytocin

4. Cortisol and testosterone

The biomolecule that cannot act as a chemical messenger [hormone] is:
1. Proteins

2. Steroids

3. Fatty acids

4. Carbohydrate

How many of the following hormones don’t enter the target cell?

Cortisol, Iodothyronine, Testosterone, Estradiol, FSH, Insulin, Glucagon

1. 4

2. 7

3. 3

4. 2

Besides cAMP, which one of the following molecules acts as a “secondary messenger” in the biological system?

1. Ca⁺²

2. ATP

3. cDNA

4. CGTP

Extracellular receptors must be required for the action of:

I.   Oxytocin

II.  Thyroxine

III. Epinephrine

IV. Glucagon

1.  I, II, III & IV

2.  I, IV only

3.  I, III, IV

4.  III & IV only

Some hormones can act on their target cells through second messengers. Identify the one that does not:
1. cortisol
2. adrenaline
3. FSH
4. calcitonin

Which of the following set of hormones can easily pass through the cell membrane of a target cell and bind to specific intracellular receptors?

a. Placental progesterone

b. Aldosterone

c. Estrogen

d. Thyroxine

Mark the correct set:

1. b&c

2. a,b&c

3. a &c

4. a,b,c & d

How many of these hormones will interact with the membrane-bound receptor?
Thyroxin, epinephrine, progesterone, relaxin, estrogen:-

1. Three

2. Two

3. Five

4. One