NEET BIOLOGY

Detailed explanation-1: -ATP production can occur in the presence of oxygen from cellular respiration, beta-oxidation, ketosis, lipid, and protein catabolism, as well as under anaerobic conditions. Ketosis is a reaction that yields ATP through the catabolism of ketone bodies.

Detailed explanation-2: -An Increase in Mitochondrial ATP Production is Mediated by Activated SIRT1 and AMPK. In the situation of a low level of glycolysis and increased OXPHOS, the reduction of NAD+ would be limited, and cells would maintain a high NAD+/NADH ratio.

Detailed explanation-3: -Aerobic respiration is much more efficient due to the high production of ATP. This high production occurs due to the complete breakdown of glucose into CO2 and Energy (ATP).

Detailed explanation-4: -Greater ATP consumption by a cell is indicated by a buildup of ADP. As ATP usage decreases, the concentration of ADP decreases, and now, ATP begins to build up in the cell. This change is the relative concentration of ADP to ATP triggers the cell to slow down the electron transport chain.