During how many steps is Co-$A$ used in aerobic respiration?

Select the correct statement regarding microfibrils.

Match the given below processes with their respective locations:

$A$. Kreb's cycle	$i$. Inner surface of membrane of mitochondria
$B$. Photorespiration	$ii$. Cytoplasm
$C$. Oxidative phosphorylation	$iii$. Peroxisomes
$D$. Glycolysis	$iv$. Mitochondrial matrix

Choose the correct matching sequence:

Given below are two statements.
Statement-$I$: Conversion of pyruvic acid to acetaldehyde in prokaryotes occurs in cytoplasm.
Statement-$II$: Conversion of pyruvic acid to acetyl CoA in eukaryotes occurs in mitochondria.
In the light of above statements,choose the correct answer from the options given below.

Match the name of the scientist or discovery with its corresponding pathway or process:

$A$. $PPP$ (Pentose Phosphate Pathway)	$i$. Kuhne pathway
$B$. Demonstration of fermentation	$ii$. Kreb's cycle
$C$. $TCA$ cycle	$iii$. Warburg-Dickens pathway
$D$. Glycolysis	$iv$. Embden-Meyerhof-Parnas pathway

Choose the correct matching sequence:

How many molecules of $CO_2$ are released during the complete oxidation of one molecule of pyruvic acid?