Human Body
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80 The area of the human tongue sensitive to bitterness is restricted to :
A
tip
B
edges
C
middle part
D
posterior part
81 At very high altitude, the Red Blood Corpuscles in the human body will :
A
increase in size
B
decrease in size
C
increase in number
D
decrease in number
82 A test tube baby means :
A
a baby grown in a test tube.
B
embryo fertilised in uterus
and developed in test tube.
C
embryo fertilised and developed in uterus.
D
fertilisation in vitro and then
transplantation in the uterus.
83 Which of the following makes the skin layer impervious to water ?
A
Collagen
B
Melanin
C
Keratin
D
Chitin
84 In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is :
A
Diffusion
B
Absorption
C
Osmosis
D
Electrophoresis
85 Which one of the following is NOT a function of kidney ?
A
Regulation of blood pH
B
Removal of metabolic wastes
from the body
C
Production of antibodies
D
Regulation of osmotic pressures of the blood
86 Who among the following analysed DNA for the first time ?
A
Arthur Cornberg
B
Hargobind Khurana
C
M. W. Nirenberg
D
Watson and Krick
87 Which of the following hormone is released in excess quantity during excitement ?
A
Cortisone
B
Serotonin
C
Adrenaline
D
Oestrogen