Fermentation involves the breakdown of by enzymes produced by microorganisms. The breakdown products are then metabolized aerobically or anaerobically by the microorganisms to produce .

Explanation:

Fermentation involves the breakdown of carbohydrates by enzymes produced by microorganisms; The breakdown products are then metabolized aerobically or anaerobically by the microorganisms to produce desirable organic compounds

Fermentation is any energy yielding metabolic reaction in which final electron acceptor is an internal organic molecule (generally an intermediate of metabolic reaction)

For example in lactic acid fermentation pyruvate is the final electron acceptor and converted into lactate, reaction is catalysed by lactate dehydrogenase, this type of fermentation occurs in muscle cells of humans and other animals

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."