The process of formation of lactic acid from glucose is known as:

Which of the following is the most common organism that can respire even in the absence of $O_2$?

The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor is called:

$NADH_2$ generated in glycolysis produces $ATP$ in $ETS$ in the presence of $O_2$. In the absence of $O_2$,this $NADH_2$ functions as:

Incomplete breakdown of sugar in anaerobic respiration forms:

In animal cells,like muscle,during exercise when $O_{2}$ is inadequate for cellular respiration,pyruvic acid is reduced into lactic acid by