What amount of energy is released from glucose during lactic acid...

Lactic acid fermentation is a type of anaerobic metabolic process. This usually takes place in some bacteria and even in muscle cells of animals and human beings. In lactic acid fermentation $NADH . {H}^{+}$ transfers its electrons directly to pyruvate, generating lactate as a by-product. Less than seven percent of the energy in glucose is released in this process.