The aerobic respiration yields

What is the significance of step-wise release of energy in respiration?

How many $ATP$ molecules are produced during aerobic respiration from the complete oxidation of one glucose molecule via the malate-aspartate shuttle?

The respiratory substrate yielding the maximum number of $ATP$ molecules among the following is

During oxidation within a cell,all the energy contained in respiratory substrates is not released free into the cell,or in a single step. It is released in a series of slow step-wise reactions controlled by enzymes,and it is trapped as chemical energy in the form of $............$

The efficiency of aerobic respiration is approximately (in $\%$)