Biology Practice Questions Set 14

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For India's Top Government Exams

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Which one among the following statements is correct? *

1 point

All proteins are enzymes

All enzymes are proteins

None of the enzymes is the protein

None of the proteins is the enzyme

Which one of the following vitamins is necessary for blood clotting?
*

1 point

Vitamin A

Vitamin D

Vitamin K

Vitamin C

Cancer is more common in older people because
*

1 point

their immune systems have degenerated

the supply of certain hormones declines with age

their bodies are unable to adjust to the changing environment

they have accumulated more mutations

Consider the following statements regarding antibiotics

1. They are used to destroy disease-causing bacteria.
2. They can be applied to the skin, swallowed, or injected to fight micro-organisms inside the body.
3. They are effective against disease-causing viruses.
4. The first antibiotic to be discovered was Tetracycline.
Which of the statement(s) given above is/are correct?

1 point

1 and 2

1, 2 and 4

2, 3 and 4

Only 1

The crew and passengers of a flying aircraft suffer generally from chronic obstructive pulmonary disease due to the effect of
*

1 point

solar radiation

ozone concentration

nitrogen oxide

particulate pollutant

Which one of the following statements about blood transfusion is correct?
Blood group B can give blood to
*

1 point

blood Group B and receive from Group AB

blood Groups B and AB and receive from Group B

blood Groups B and AB and receive from Group A

blood Group O and receive from Group B

The fossil of Archaeopteryx represents evidence of the origin of
*

1 point

birds from reptiles

mammals from reptiles

reptiles from amphibians

mammals from birds

The pH of human blood is normally around ___
*

1 point

4.5-5.5

5.5-6.5

7.5-8.0

8.5-9.0

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

1 point

The oxygen-carrying capacity of hemoglobin is increased

The oxygen-carrying capacity of hemoglobin is decreased

RBC count increases

RBC count decreases

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

1 point

Pancreas and gall bladder

Gall bladder and stomach

Pancreas and stomach

Stomach and small intestine

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