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Biology 12 Chapter 18 Chemical Coordination - 21
1.
Deficiency of which of the following causes myxedema?
a) Iodine
b) Insulin
c) Glucose
d) Salt
2.
What is the severe hypothyroidism in infants called?
a) Grave’s disease
b) Cretinism
c) Myxedema
d) Hypocalcaemia
3.
................results in the severe hypothyroidism in infants?
a) Insulin under secretion
b) Insulin over secretion
c) Congenital over secretion
d) Congenital under secretion
4.
Which of the following are the effects of the cretinism?
a) Poor physical growth
b) Both b and c
c) Disproportionate body size
d) Genetic mutation
5.
Which of the following is not the effect of the cretinism?
a) Poor physical growth
b) Infertility
c) Genetic mutation
d) Disproportionate body size
6.
Which of the following are the effects of the cretinism?
a) Disproportionate body size
b) All of these
c) Poor physical growth
d) Infertility
7.
Which of the following are the effects of the cretinism?
a) All of these
b) Bone maturation is delayed
c) Poor physical growth
d) Disproportionate body size
8.
Which hormone is secreted due to excessive secretion of calcium in blood?
a) Pyridine
b) Thyroxin
c) Calcitonin
d) Parathormone
9.
Which hormone is inhibited due to declining levels of calcium in blood?
a) Pyridine
b) Parathormone
c) Calcitonin
d) Thyroxin
10.
Which of the following hormone increases the deposition of calcium in bone matrix?
a) Parathormone
b) Pyridine
c) Thyroxin
d) Calcitonin
11.
Which of the following hormone works antagonistically to to the Calcitonin?
a) Thyroxin
b) Parathormone
c) Insulin
d) Glucagon
12.
Calcitonin increases the deposition of ....................in bone matrix?
a) Calcitone
b) Pyridine
c) Iodine
d) Calcium
13.
Which of the following hormone inhibits Ca@2+# absorption by intestines?
a) Pyridine
b) Calcitonin
c) Thyroxin
d) Parathormone
14.
Calcitonin inhibits ......................absorption by intestines?
a) Iodine
b) Pyridine
c) Calcium
d) Calcitone
15.
Which of the following hormone decreases re-absorption of Ca@2+# by the kidney tubules?
a) Calcitonin
b) Thyroxin
c) Pyridine
d) Parathormone
16.
Calcitonin decreases re-absorption of ............by the kidney tubules?
a) Iodine
b) Pyridine
c) Calcitone
d) Calcium
17.
During which age, calcitonin is important?
a) Old age
b) Childhood
c) Teenage
d) Adult
18.
During which age, the skeleton grows quickly?
a) Adult
b) Childhood
c) Old age
d) Teenage
19.
During which age, the bones are changing dramatically in mass, size and shape?
a) Adult
b) Old age
c) Childhood
d) Teenage
20.
How many parathyroid glands are present in humans?
a) One
b) Four
c) Two
d) Five
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