Tuesday 10 March 2015

Biology SECTION C


1.   Human blood is a viscous fluid. This viscosity is due to

(a)    Proteins in blood
(b)   Platelets in plasma
(c)    Sodium in serum
(d)   RBC and WBC in blood

2.   What would happen if human blood becomes acidic (low pH)?

(a)    Oxygen –carring capacity of hemoglobin is increased
(b)   Oxygen – carring capacity of hemoglobin is decreased
(c)    RBC count increases
(d)   RBC count decreases

3.   Cancer is more common in older people because
(a)    Their immune systems have degenerated
(b)   The supply of certain hormones Declines with age
(c)    Their bodies are unable to adjust to the changing environment
(d)   They have accumulated more mutations

4.   Milk is unique in its nutritive value However, it is a poor source of
(a)    Calcium
(b)   Iron
(c)    Copper
(d)   Sodium

5.   Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which, are not generally destroyed by normal cooking process. Aflatoxins are produced by

(a)    Bacteria
(b)   Protozoa
(c)    Moulds
(d)   Viruses

6.   Dog bite can cause rabies. Which among the following other animals can also cause rabies?
(a)    Donkey
(b)   Bat
(c)    Horse
(d)   Crocodile

7.   Many transplanted seedlings do not grow because

(a)    The new soil does not contain favourable minerals
(b)   Most of the root hairs grip the new soil too hard
(c)    Most of the root hairs are lost during transplantation
(d)   Leaves get demaged during transplantation

8.   In which part of the human body is the smallest bone found?
(a)    Wrist
(b)   Palm
(c)    Nose
(d)   Ear

9.   A patient suffering from prolonged illness and on an antibiotic regime is recommended intake of probiotics in his diet. These probiotics are supplements essentially comprising
(a)    Proteins
(b)   Vitamins
(c)    Lactic acid bacteria
(d)   Electrolytes

10.   Which one among the following metals is used in forewords to make a brilliant white light?

(a)    Sodium
(b)   Magnesium
(c)    Aluminium
(d)   Silver

Answer:

1.       C
2.       B
3.       D
4.       B
5.       C
6.       B
7.       C
8.       D
9.       C
10.   B

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