Question

question 38
water is an end - product in
a. lactic acid formation
b. etc (oxidative phosphorylation)
c. glycolysis
d. ethanol formation
e. krebs cycle

Explanation:

• In lactic acid formation, the end - product is lactic acid.
• In glycolysis, the end - products are pyruvate, ATP, and NADH.
• In ethanol formation, the end - products are ethanol and carbon dioxide.
• In Kreb's Cycle, the end - products are \(CO_2\), ATP, \(NADH\), and \(FADH_2\).
• In the Electron Transport Chain (ETC, oxidative phosphorylation), oxygen acts as the final electron acceptor. \(O_2\) combines with electrons (\(e^-\)) and protons (\(H^+\)) to form water (\(H_2O\)).

Answer:

B. ETC (oxidative phosphorylation)