Human Body
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17 The blood cholesterol level in 100 ml of blood in a normal person varies between:
A
150 and 200 mg
B
120 and 200 mg
C
100 and 180 mg
D
80 and 160 mg
18 In which part of the eye lies the pigment that decides the colour of the eyes of a person?
A
Cornea
B
Choroid
C
Iris
D
Vitreous body
20 The body temperature is regulated by:
A
Pituitory gland
B
Hypothalamus
C
Pineal gland
D
Thyroid gland
21 A substance that stimulates the production of antibodies when introduced into a living organism is known as:
A
carcinogen
B
androgen
C
antigen
D
oestrogen
22 Which is the organ that excretes water, fat and various catabolic wastes ?
A
Kidney
B
Skin
C
Spleen
D
Salivary glands
23 Heart attack occurs due to :
A
Bacterial attack on the heart
B
Stopping of heart beat
C
Lack of blood supply to the
heart itself
D
Impairment of heart’s working due to unknown reasons