The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid

There are three points in the cycle where is ${\rm{NA}}{{\rm{D}}^{\rm{ + }}}$ is reduced to ${\rm{NADH}}\,{\rm{ + }}\,{{\rm{H}}^{\rm{ + }}}$

There is one point in the cycle where ${\rm{FA}}{{\rm{D}}^ + }$ is reduced to ${\rm{FAD}}{{\rm{H}}_2}$

During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised

Incomplete oxidation of glucose in the cytoplasm

Leakage of protons across the inner mitochondrial membrane

Utilization of the proton gradient for processes other than ATP synthesis

Variations in the efficiency of the electron transport chain

Mitosis produces genetically identical daughter cells.

Meiosis is involved in sexual reproduction.

Mitosis produces two diploid cells.

Mitosis produces genetically different daughter cells.

Plastids

Golgi complex

Mitochondria

Endoplasmic reticulum

Intermediates in the pathway are utilised to synthesise other compounds

No alternative substrates other than glucose is allowed to enter the pathway at intermediate stages

None of the substrate is respired in the pathway at intermediary stages

Pathway functioning is insequential

3 ATP molecules

12 ATP molecules

2 ATP molecules

1ATP molecule

Succinyl-CoA synthetase

Isocitrate dehydrogenase

α-ketoglutarate dehydrogenase

Malate dehydrogenase

2

4

6

8

NADH

${O_2}$

ADP

$ATP + {H_2}O$

Pyruvic acid

Isocitric acid

Acetyl Co-A

Phosphoglyceric acid

Photolysis

Photophosphorylation

Carboxylation

Oxidative phosphorylation