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

Choose the incorrect sentence.

Match List $-I$ with List $-II :$

List $-I$	List $-II$
$a$. Porins	$i$. Pink coloured nodules
$b$. Leg-haemoglobin	$ii$. Lumen of thylakoid
$c$. $H^{+}$ accumulation	$iii$. Amphibolic pathway
$d$. Respiration	$iv$. Huge pores in outer membrane of mitochondria

Choose the correct answer from the options given below:

Heat energy of plants is measured in

In the presence of a dilute salt solution,the rate of respiration in a respiring tissue:

Assertion $A$: Carbohydrates are the primary source of energy in living organisms.
Reason $R$: Glucose is the common substrate used in respiration.
Which option is correct for Assertion $A$ and Reason $R$?