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Question

In animal cells, the breakdown of pyruvate using oxygen during aerobic respiration occurs in the _______.

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

Mitochondria

Glycolysis breaks glucose down to pyruvate in the cytoplasm.

In aerobic respiration the pyruvate then enters the mitochondria, where it is broken down using oxygen into carbon dioxide and water, releasing a large amount of ATP.

This is why mitochondria are called the powerhouse of the cell; ribosomes make proteins and the nucleus stores genetic material.

Hence, the answer is mitochondria.

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