The statement about cellular respiration that is not true is this: KREB'S CYCLE ACTIVITY IS DEPENDENT SOLELY ON AVAILABILITY OF SUBSTRATES; OTHERWISE IT IS UNREGULATED.
Kreb's cycle refers to the series of biochemical reactions through which humans generate energy in the presence of oxygen via the oxidation of acetyl COA.
The major factors that regulate the Krebs cycle is the concentration of ATP and NADH. The cycle is strictly controlled based on the level of energy available in the cells. The key regulatory enzymes for the cycle are isocitrate dehyrogenase and alpha ketoglutarate deydrogenase.
