Question:medium

Which of the following processes is NOT part of cellular respiration?

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Distinguishing between cellular respiration and photosynthesis is fundamental in understanding energy flow in biological systems.
Updated On: Jan 13, 2026
  • Glycolysis
  • Krebs Cycle
  • Calvin Cycle
  • Electron Transport Chain
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The Correct Option is C

Solution and Explanation

Cellular respiration is the process by which cells convert energy from nutrients into adenosine triphosphate (ATP) and release waste. The primary stages are: Glycolysis: Breaks glucose into pyruvate, yielding ATP and NADH. Krebs Cycle (Citric Acid Cycle): Converts pyruvate to carbon dioxide, producing ATP, NADH, and FADH\(_2\). Electron Transport Chain: Uses electrons from NADH and FADH\(_2\) to generate a proton gradient that powers ATP synthesis.The Calvin Cycle, conversely, is a photosynthesis stage in plants that converts carbon dioxide into glucose. It is unrelated to cellular respiration.
Conclusion: The Calvin Cycle is not part of cellular respiration.% Quicktip
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