Question

What is an example of lactic acid fermentation?

Answer 1

Fermentation:

1. The metabolic process by which the skeletal muscles of humans, bacteria, and yeast produce energy (ATP) in the absence of oxygen.
2. Fermentation is divided into ethanol fermentation and lactic acid fermentation.
3. In ethanol fermentation (years and some bacteria ) the end product of glycolysis is converted into ethanol and carbon dioxide.
4. In lactic acid fermentation (skeletal muscles) the end product of glycolysis is converted to lactic acid.

Lactic acid fermentation:

1. It can be defined as the alternative pathway to produce energy under anaerobic conditions (low oxygen) due to heavy exercise or severe straining.
2. After doing heavy exercise, the body cannot supply the oxygen into the cells in the appropriate amount, then muscles switch to anaerobic respiration to produce energy by producing lactic acid.
3. The result of lactic acid fermentation in muscles and body parts leads to stiffness or cramps.
4. The discomfort usually stays for only a few days or hours and disappears after that.
5. Lactic acid fermentation in muscle cells convert the end product of glycolysis (Pyruvate) into 2 molecules of lactate and NAD⁺ in the presence of the enzyme lactate dehydrogenase.