Alcohol is produced during the process of

Alcoholic fermentation occurs in the presence of which enzyme?

Inhibition of sugar breakdown due to the presence of $O_2$ under anaerobic conditions is called

Identify the products marked by $(i)$ and $(ii)$ in the following pathway:
$3$-phosphoglyceric acid $\rightarrow$ $(i)$ $\rightarrow$ Pyruvate $\rightarrow$ $(ii)$ (with $NADH + H^+$ being converted to $NAD^+$)

In animal muscle cells,lactic acid fermentation occurs when there is poor supply of . . . . . . .

$A$ person who has done intensive exercise and lies down for rest,his heart beat fastens and is gasping for breath. He is said to have