Question

118) The electrons of the electron transport chain come from molecules produced during: glycolysis a) the krebs cycle b) c) sugar metabolism d) all of the above a and b only e) 119) The electrons of the electron transport chain come from: a) NAD+ b) FAD+ NADH and FADH c) all of the above d) e) a and b 120) In feedback inhibition loop, which often serves as the allosteric inhibitor? a) The enzyme b) The starting compound c) ATP d) The end product e) NADH

Answer 1

118) b electron transport chain is a series of complexes that transfer from electron donor to electron acceptor . Molecule formed during kreb cycle like NADH and FADH ₂  transfer it's electron to electron acceptor to ETC .

119) c. ETC is a series of electron trasfer embedded in inner mitochondrial membrane that shuttles electron from NADH and FADH₂ to molecular oxygen

120) d. feedback Inhibition is a form of alosteric regulation in which a final product of sequences of enzymatic process accumulate in abundance .final product bind on alosteric site on first enzyme and inhibit activity.