IGCSE O Level Biology MCQs - Chapter 15

Respiration in Biology Multiple Choice Questions PDF Download - 9

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Respiration in Biology Questions & Answers PDF Download: MCQ Quiz 9

MCQ 41: Breathing mechanism includes

A) internal respiration

B) external respiration

C) inspiration

D) all of above

MCQ 42: Wastes of anaerobic respiration includes

A) lactic acid

B) ethanol

C) carbon dioxide

D) energy

MCQ 43: In respiration , oxidation helps in

A) photosynthesis

B) conversion of chemical energy into potential energy

C) conversion of radiant energy into chemical energy

D) conversion of potential energy into chemical energy

MCQ 44: Carbon dioxide (CO₂) can

A) not be lost by root

B) be lost through root hairs

C) enter the root through root hairs

D) not be produced in tissue respiration

MCQ 45: In yeast, alcoholic fermentation results through

A) aerobic respiration

B) anaerobic respiration

C) antirobic respiration

D) photosynthesis

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