Question

Lactic acid accumulationnin mammalian cells and fermentation iyeast cells

Answer 1

During intense exercise, there may not be enough oxygen available to complete the process, so a substance called lactate is made. Your body can convert this lactateto energy without using oxygen. But thislactate or lactic acid can build up in your bloodstream faster than you can burn it off.
One type of fermentation occurs when yeast and some other single-celled organisms break down sugars. This process is sometimes called alcoholic fermentation because alcohol is one of the products. The other products are carbon dioxide and a small amount of energy.