Aerobic respiration produces ......... energy from glucose. (in $kcal$)

Match the following and choose the correct option from those given below.

Column $A$	Column $B$
$A$. Molecular oxygen	$(i)$. $\alpha$-Ketoglutaric acid
$B$. Electron acceptor	$(ii)$. Hydrogen acceptor
$C$. Pyruvate dehydrogenase	$(iii)$. Cytochrome $c$
$D$. Decarboxylation	$(iv)$. Acetyl $CoA$

During respiration,there is:

The term 'floating respiration' is used when the respiratory substrate is .........

Which of these statements is incorrect?

The given schematic diagram shows three main biosynthetic pathways of aerobic respiration in three boxes. The arrows indicate reactants or products. Arrows $4, 8,$ and $12$ all represent -