Lactic Acid Fermentation Q.Q. 10/26/18 What is the name of the anaerobic process that produces small amounts of ATP and is temporarily used by our muscle cells? Lactic Acid Fermentation

Fermentation

Fermentation When oxygen is not present, glycolysis is followed by a pathway that makes it possible to continue to produce ATP without oxygen. The combined process of this pathway and glycolysis are called fermentation. It is an ANAEROBIC process that takes place in the cytoplasm.

Alcoholic Fermentation Lactic Acid Fermentation 2 Types of Fermentation Alcoholic Fermentation Lactic Acid Fermentation

Alcoholic Fermentation Yeasts and a few other microorganisms use alcoholic fermentation, which produces ethyl alcohol and carbon dioxide. Used to create alcoholic beverages and causes bread dough to rise. When yeast cells run out of oxygen they produce bubbles of CO2 that form the air spaces you see in a slice of bread.

Yeast cells do alcoholic fermentation! Yeast cell eating Animation (FUNGI)

*When do humans use lactic acid fermentation?? Converts pyruvic acid into lactic acid *pyruvic acid is the product of glycolysis Humans and many other organisms are lactic acid fermenters. *When do humans use lactic acid fermentation??

Other organisms that use lactic acid fermentation are bacteria! The cheese making process VIDEO Bacteria: Lactobacillus acidophilus

Energy and Exercise Fast vs. Long Term

– needed in a hurry, such as a sprint! Quick Energy – needed in a hurry, such as a sprint! Cells normally only contain a small amount of readily available ATP. The muscles will only have enough ATP for a few seconds of the race. After those few seconds the body will go through lactic acid fermentation to create ATP, which is enough to last about 90 seconds.

Long Term Energy For exercise longer than 90 seconds, cellular respiration is the ONLY way to continue generating ATP. *Which means is OXYGEN NEEDED! (AEROBIC) Cell respiration releases ATP more slowly, this is why even well-conditioned athletes must pace themselves.

Long Term Energy continued.. Your body then goes into the glycogen of the muscles, which will last for 15-20 minutes. After that your body will start to break down other stored molecules such as fats, for energy

*rest of Cellular Respir.