NEET Biology Respiration In Plants Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Answer: (a)

In human muscle cell lactic acid fermentation occurs where pyruvic acid produced in glycolysis is reduced by NADH2 to form lactic acid without producing carbon dioxide. In fermentation process less energy is released.

${CH_{3}COCOOH} ↙ {\text"Pyruvic acid"} + NADH_{2} → ↖ {\text"Lactate dehydrogenase"} ↙ {\text"FMN, Zn^{2+}"} {CH_{3}CHOHCOOH} ↙ {\text"Lactic acid"} + NAD$