Which of these is not a ketone body?

The respiratory pathway where $NADPH_2$ is produced is known as:

Select the correct option regarding the following statements:
$(1)$ During glycolysis/fermentation,$2 \, ATP$ molecules are produced from one molecule of glucose.
$(2)$ If the respiratory substrate is fat/carbohydrate,the $RQ$ of the respiring cells is less than one.

The soil with the poorest water-holding capacity is

The Pentose Phosphate Pathway,an alternative pathway of respiration,was elucidated by:

Match the processes involved in aerobic respiration given in Column-$I$ with their occurrence in the cell from Column-$II$ and choose the correct option.

Column-$I$	Column-$II$
$i$. Glycolysis	$b$. Cytoplasm
$ii$. Krebs cycle	$a$. Mitochondrial matrix
$iii$. $ETS$	$c$. Inner mitochondrial membrane