Biology SECTION E

1.    Which of the following is/ are the methods of prevention from HIV infection?

1.       Use of condoms.

2.       Use of intra-uterine devices like copper- T.

3.       Staying away from HIV infected person

4.       Using a face mask when in company of HIV infected person

Select the correct answer using the codes given below.

(a)    1 and 2

(b)   3 and 4

(c)    1, 2 and 4

(d)   Only 1

2.   In humans, which one among the following, with reference to breathing, is correct?

(a)    During inhalation, diaphragam relaxes

(b)   During exhalation, thorax cavity expands

(c)    During inhalation, intra- pleural pressure becomes more negative

(d)   Unlike inhalation, normal exhalation is an active process.

3.   Consider the following items.

1.       Proteins, carbohydrate  and fats

2.       Vitamins

3.       Minerals

4.       Water

Which of the above are considered as the constituents of food?

(a)    1, 2 and 4

(b)   1 and 3

(c)    2 and 3

(d)   All of these

4.   In human beings, the opening of the stomach into the small intestine is called

(a)    Caecum

(b)   Ileum

(c)    Oesophagus

(d)   Pylorus

5.   Aquatic animals breathe much faster than terrestrial animals because of

(a)    Low amount of dissolved oxygen in water

(b)   Low amount of haemoglobin in their blood

(c)    High metabolic rate of aquatic animals

(d)   Large amount of dissolved nitrogen in water

6.   For which one of the following is the diet mainly composed of other snakes?

(a)    Krait

(b)   Russell’s viper

(c)    Rattle snake

(d)   King cobra

7.   Which one of the following is a vitamin?

(a)    Citric acid

(b)   Folic acid

(c)    Glutamic acid

(d)   Linoleic acid

8.   Dual Energy X- ray Absorption tiometry (DEXA) is used to measure

(a)    Spread of solid tumour

(b)   Bone density

(c)    Ulcerous growth in stomach

(d)   Extent of brain haemorrhage

9.   The gastrointestinal hormones namely secretin and cholecystokinin secreted by duodenal epithelium activate respectively which organs to discharge their secretions?

(a)    Pancreas and gall bladder

(b)   Gall bladder and stomach

(c)    Pancreas and stomach

(d)   Stomach and small intestine

10.   Which one of the following enzymes is found in human saliva?

(a)    Trypsin

(b)   Pepsin

(c)    Ptyalin

(d)   Rennin

Answer:

1.       D

2.       D

3.       D

4.       D

5.       A

6.       D

7.       B

8.       B

9.       A

10.   C