Question

Cellular respiration involves:

• A. Only glycolysis
• B. Only Krebs cycle
• C. Glycolysis, Krebs cycle and Electron Transport Chain only
• D. Kreb’s cycle and Electron Transport Chain only

Answer 1

The correct option is C

Glycolysis, Krebs cycle and Electron Transport Chain only

Cellular respiration involves following three processes:
1. Glycolysis - It is the process in which glucose (a 6-carbon compound) is converted into pyruvic acid (3-carbon compound).
2. Krebs cycle - It is the process in which acetyl-CoA produced from pyruvic acid undergoes a series of reaction by which most living cells produce energy molecules. It is an aerobic process.
3. Electron Transport Chain - It is a process in which ATP is produced using the proton gradient created across a membrane.