A. The P/O ratio of NADH is the mitochondria is . b. This means protons are pumped across the mitochondrial membrane by each NADH oxidized starting with complex The P/O ratio of FADH2 in bacteria is.

a). 2.3

b). 1.5

Explanation:

The P/O ratio stands for the in the cells. The P/O ratio is defined as the which is of the two electrons by a defined electron transport chain and it is terminated by the reduction in the oxygen atom.

The P/O ratio of NADH in mitochondria

The estimated P/O ratio for = 1.5

a- all cells come from pre-existing cells