IGCSE O Level Biology MCQs - Chapter 15

Respiration in Biology Multiple Choice Questions (MCQs) PDF Download - 5

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The Multiple Choice Question (MCQ Quiz): Over-breathing is a symptom of; "Respiration in Biology" App Download (Free) with answers excess oxygen, less oxygen, excess carbon dioxide and excess carbon monoxide to learn online classes courses. Solve human biology quiz questions, download Google eBook (Free Sample) for SAT prep classes.

Respiration in Biology Questions & Answers PDF Download: MCQ Quiz 5

MCQ 21: Over-breathing is a symptom of

less oxygen
excess oxygen
excess carbon dioxide
excess carbon monoxide

MCQ 22: Too little carbon dioxide (CO₂) in lungs leads to

no breathing
over breathing
under breathing
asthma

MCQ 23: Stimulus for breathing is

lack of oxygen in blood
excess of carbon dioxide in blood
contraction of alveoli
diaphragm movements

MCQ 24: Respiration is a/an

chemical process
mechanical process
electrical process
oxidation process

MCQ 25: In respiration ultimate source of energy is

radiant energy
chemical energy
organic energy
potential energy

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