Insulin differs from Growth hormone in:
1.  Increases activity of m-RNA and Ribosomes
2.  Increase the permeability of cell membrane
3.  Affects metabolism of fats by inducing lipogenesis
4.  Increasing protein synthesis

Which gland decreases in size with increasing age:

Melatonin is secreted by:
1. Pineal gland
2. Skin
3. Pituitary Gland
4. Thyroid

MSH is secreted by:
1. Anteria lobe of the pituitary
2. Middle lobe of the pituitary
3. Posterior lobe of the pituitary
4. Endostyle

Melanin protects from:

1. U.V. rays

2. Visible rays

3. Infrared rays

4. X-rays

When both ovaries of a rat are removed then which hormone is decreased in blood:
1. Oxytocin
2. Prolactin
3. Estrogen
4. Gonadotrophic releasing factor

Which of the following is used in the treatment of Thyroid cancer:

Adrenaline has a direct effect on:
1. S.A. Node
2. β-cells of Langerhans
3. Dorsal root of spinal cord
4. Epithelial cells of the stomach

Acromegaly is caused by:

1. Excess of S.T.H.

2. Excess of Thyroxin

3. Deficiency of Thyroxin

4. Excess of Adrenalin

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency: 
1. Relaxin – Gigantism
2. Prolactin – Cretinism
3. Parathyroid hormone – Tetany
4. Insulin – Diabetes insipidus