Respiration in Plants Question 16
16. In glycolysis, during oxidation electrons are removed by
(a) ATP
(b) glyceraldehyde-3-phosphate
(c) $NAD+$
(d) molecular oxygen
Show Answer
Answer : c
Hints & Solutions
(c) In glycolysis, during oxidation electrons are removed by $NAD^{+}$. When 3-phosphogtyceraldehyde is converted into 1,3 diphosphoglyceric acid, two electrons and two protons are released which are utilised to convert $NAD^{+}$to NADH and one $H^{+} NAD^{+}+2 H^{+}+$ $2 e \to NADH+H^{+}$. ATP is the energy currency in all cells. Glyceraldehyde 3 - phosphate is reduced during glycolysis. Molecular oxygen is the terminal electron acceptor in ETS.
