Q. The energy releasing process in which the substrate is oxidised without an external electron acceptor is called
A) Glycolysis
B) Fermentation
C) Photorespiration
D) Aerobic respiration
Explanation
[Solution from source] In fermentation the NADH produced during glycolysis is reoxidised by passing electrons to an organic product of the substrate itself (pyruvate or acetaldehyde), so no external acceptor such as O₂ is needed. Aerobic respiration depends on oxygen as the terminal external acceptor. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.