During respiration,substrate level phosphorylation occurs in . . . . . . .

Select the correct statements from the following:
$I-$ During respiration,plants take in $CO_2$ and release $O_2$.
$II-$ The surface of most cells in plants is in contact with air.
$III-$ The loose arrangement of parenchyma cells in leaves,stems,and roots creates a network of air spaces.
$IV-$ The energy released during respiration is stored in the form of $ATP$.
$V-$ Glucose is oxidized to release energy in only a single step.

Select the correct option for respiratory substrates.

In how many steps is $CO_2$ released during the aerobic respiration of pyruvic acid?

Select the correct statement regarding microfibrils.

Which statement can be shared by facilitated diffusion and active transport?