E-PolyLearning

51. Most abundant compound also known as medium of life is
a. air
b. oxygen
c. water
d. food
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Answer: (c).water

52. A valuable and most important quality of proteins is to prevent blood loss after an injury by process of
a. (coagulation)blood clotting
b. cell division
c. imputation
d. glycolysis
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Answer: (a).(coagulation)blood clotting

53. Due to its unique properties carbon can react with many known elements forming
a. covalent bond
b. ionic bond
c. coordinate covalent bond
d. hydrogen bond
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Answer: (a).covalent bond

54. Cellulose is highly insoluble in water and is not digested in digestive tract of
a. human
b. birds
c. protozoa's
d. insects
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Answer: (a).human

55. Proteins comprises off total dry weight in a cell which is over
a. 60%
b. 50%
c. 70%
d. 40%
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Answer: (b).50%