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Which gas is mainly required for respiration in the human body?

Answer and explanation

Correct answer: Oxygen

Oxygen is used in cellular respiration for the complete oxidation of food such as glucose, releasing energy in the form of ATP. Although nitrogen is abundant in air, human cells do not use it for cellular respiration. Carbon dioxide is a waste product of respiration and is exhaled. Exam tip: For the gas required in respiration, choose oxygen; carbon dioxide is a product.

Related tags

OxygenCellular RespirationHuman RespirationLife ProcessesClass 10 ScienceRespirationScienceClass 10 Mcq

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