O Level Courses

Chapter 15: IGCSE O Level Biology Exam Tests

IGCSE O Level Biology MCQs - Chapter 15

Respiration in Biology Multiple Choice Questions PDF Download - 1

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Respiration in Biology Questions & Answers PDF Download: MCQ Quiz 1

MCQ 1: Wastes of aerobic respiration (with O2) includes

A) carbon dioxide
B) lactic acid
C) ethanol
D) energy

MCQ 2: Air pressure in thorax increases in

A) anaerobic respiration
B) inspiration
C) expiration
D) digestion

MCQ 3: Front of the ribs are attached to the

A) diaphragm
B) sternum
C) external intercostal muscles
D) internal intercostal muscles

MCQ 4: Air inhaled in addition to the tidal air is called

A) complemental air
B) residual air
C) supplemental air
D) saturated air

MCQ 5: Dry mass is lost through

A) lenticels
B) respiration
C) stomata
D) limiting factor of enzymes

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