Which metabolic pathway is common to both cellular respiration and fermentation?

• A. Krebs Cycle
• B. Glycolysis
• C. Oxidative Phosphorylation
• D. Electron Transport Chain

Answer: (B)

Verified step by step guidance

1. Identify the main metabolic pathways involved in cellular respiration: Glycolysis, Krebs Cycle, and Oxidative Phosphorylation.
2. Understand that fermentation is an anaerobic process that allows cells to produce energy without oxygen, primarily through glycolysis.
3. Recognize that glycolysis is the initial stage of both cellular respiration and fermentation, where glucose is broken down into pyruvate.
4. Note that the Krebs Cycle and Oxidative Phosphorylation require oxygen and are part of aerobic respiration, not fermentation.
5. Conclude that glycolysis is the common pathway shared by both cellular respiration and fermentation, as it occurs in the cytoplasm and does not require oxygen.