IGCSE A Level Biology Practice Test 28

Biology Online Multiple Choice Questions (MCQ) PDF - 28

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Biology Online Questions and Answers PDF Download: Quiz 28

MCQ 136: The addition of water in the carbohydrate is the reverse of condensation and is known as

A) polymerization

B) hydrolysis

C) titration

D) disintegration

MCQ 137: The incubation period of Vibrio cholera has a duration of

A) few hours to four days

B) 2 hours to five days

C) 2 hours to fifteen days

D) 30 minutes

MCQ 138: Nature of most intestinal enzymes is

A) acidic

B) alkaline

C) neutral

D) all of others

MCQ 139: The process in which a chemical substance extends to an adequate concentration, at a certain site in the body and can produce an unwanted effect in the body is termed as

A) poisoning

B) toxicity

C) sensitivity

D) adverse effect

MCQ 140: Vacuoles of plant cells are

A) permanent

B) semi-permanent

C) temporary

D) all of others

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