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Question

The breakdown of glucose into pyruvate takes place in the ____________ while pyruvate breaks down in the _____________ into water and carbon dioxide with release of energy.

A
mitochondria, nucleus
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B
cytoplasm, nucleus
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C
cytoplasm, mitochondria
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D
mitochondria, cytoplasm
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Solution

The correct option is C cytoplasm, mitochondria
In cellular respiration, glucose is first broken down into a 3-carbon molecule i.e., pyruvate in the cytoplasm of the cell. In case of aerobic respiration, pyruvate enters the mitochondria where in presence of oxygen, the pyruvate is broken down into ATP and water along with release of carbon dioxide as the gaseous waste material.

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