aerobic respiration

where does glycolysis take place?

cytoplasm

first step of glycolysis?

glucose phosphorylated using 2 molecules of ATP, forming hexose bisphosphate

second step of glycolysis?

hexose bisphosphate splits into 2 molecules of triose phosphate (3 carbon sugar)

why does the phosphorylated glucose split?

because it is very reactive

third step of glycolysis?

each TP oxidised (lose H)
by carrier molecule NAD which is reduced (gain H)
which becomes NADH

fourth step of glycolysis?

4 ATP molecules produced via substrate-level phosphorylation (2 per TP)
net gain of 2 ATP

final step of glycolysis?

substrate-level phosphorylation of TP produces 2 molecules of pyruvate

where does links reaction take place?

mitochondrial matrix

first step of the links reaction?

pyruvate is transported to the mitochondrial matrix

second step of the links reaction?

pyruvate is decarboxylated, realising a CO2 molecule

third step of the links reaction?

reaming 2 carbon molecule then oxidised by NAD which is reduced, becoming NADH
forming acetate

fourth step of the links reaction?

acetate combines with coenzyme A
forming acetylcoenzyme A, which then enters the krebs cycle

link reaction process equation?

private → acetylcoA + NADH + CO2