In Kreb’s cycle, Acetyl CoA combines with preexisting oxalo acetic acid (4-C) in the presence of water molecule to form
a) citrate
b) isocitrate
c) ketoglutarate
d) succincyl -CoA
Explanation: CoA becomes free and is ready to react with another acetyl group
During the Kreb’s cycle, citrate (6-C) is converted into………
a) succinate
b) isocitrate
c) ketoglutarate
d) succincyl -CoA
During the Kreb’s cycle, isocitrate (6-C) is converted into………
a) succinate
b) Fumarate
c) alpha ketoglutarate
d) succincyl-CoA
Explanation: in this step one carbon is oxidized into CO2 and NAD is reduced by hydrogen into NADH2
During the Kreb’s cycle, one carbon ketoglutarate is oxidized to CO2 and the remaining is converted to………
a) succinate
b) isocitrate
c) malate
d) succincyl -CoA
Explanation: hydrogen atoms are received by oxidized NAD to from NADH2
During the Kreb’s cycle, succinyl CoA is converted into………
a) succinate
b) isocitrate
c) malate
d) citrate
Explanation: energy released in the oxidation is used in the synthesis of ATP
During the Kreb’s cycle, succinate is converted into………
a) succinyl-CoA
b) Fumerate
c) malate
d) citrate
Explanation: FAD is reduced to FADH2
