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Railways PYQCBT 1 2016

RRB NTPC · Question 91

Human respiration releases A. Mixture of gases B. Carbon monoxide C. Oxygen D. Carbon dioxide

  1. C

  2. D

  3. B

  4. A

Show answer & explanation

Answer: (B) D

Explanation

In cellular respiration, glucose is broken down using oxygen to release energy, producing carbon dioxide and water as waste. The carbon dioxide is carried to the lungs and breathed out.