Antigen is a substance which:
(a) Lowers body temperatures
(b) Destroys harmful bacteria
(c) Triggers the immune system
(d) Is used as an antidote to poison
Antigen is only foreign substance which triggers immune system by way of antibody formation. These antibodies neutralize antigen by antigen- antibody reaction.
Ergotism is due to consumption of:
(a) Contaminated grains
(b) Rotting vegetables
(c) Contaminated water
(d) safe cooked food
Ergotism is caused due to consumption of contaminated grains.
The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of energy is called:
(a) Aerobic respiration
(b) Anaerobic respiration
The complete conversion of glucose in the presence of oxygen into carbon dioxide and water with release of energy is called Aerobic respiration. Oxygen is not utilized during glycolysis and anaerobic respiration.
The major chemical compound found in human kidney stones is:
(a) Calcium carbonate
(b) Calcium oxalate
(c) Calcium sulphate
Calcium oxalate crystallizes to form large crystals called kidney stones.
Consumption of fish is considered to be healthy, when compared to flesh of other animals because fish contains:
(a) Polyunsaturated fatty acids
(b) Saturated fatty acids
(c) Essential vitamins
(d) More carbohydrates and proteins
Fish have more polyunsaturated fatty acids which act as natural antioxidant.
Haemophilia is a genetic disorder which leads to:
(a) Decrease in haemoglobin
(b) Rheumatic heart disease
(c) Decrease in WBC
(d) Non-clotting of blood
Haemophilia is a genetic disorder that leads to non-clotting of blood. Carrier mother inherits haemophilia.
Endoscopy, a technique used to explore the stomach or other inner parts of the body, is based on the phenomenon of:
(a) Total internal reflection
Endoscopy, a technique used to explore the stomach or other inner parts of the body, is based on total internal reflection.
When ants bite, they inject:
(a) Glacial acetic acid
(c) Formic acid
(d) Stearic acid
When ants bite, they inject formic acid. Formic acid causes pain in the body.
In eye donation, which one of the following parts of donor’s eye is utilized?
Generally blindness is caused by dryness and hardness of cornea is outer layer of eyes. During eye donation, cornea is transplanted.
Ans – (c)
Lathyrism is caused by excessive consumption of:
(a) Khesari dal
(b) Mustard oil
(c) Polished rice
Lathyrism is caused by excessive consumption of Khesari dal.