Alexus+Grimes-+What+is+the+function+of+lactic-acid+ferementation?

=__//Welcome to my wiki:)//__=
 * Today I will tell you about the functions of lactic-acid fermentation.

__First I will tell you what lactic-acid fermentation is __Lactic acid fermentation is a biological process by which sugars such as glucose, fructose, and sucrose, are converted into cellular energy and the metabolic byproduct lactate. It is an anaerobic fermentation reaction that occurs in some bacteria and animal cells, such as muscle cells, in the absence of oxygen. If oxygen is present in the cell, many organisms will bypass fermentation and undergo cellular respiration; however, facultative anaerobic organisms will both ferment and undergo respiration in the presence of oxygen.



__What happens if oxygen is in the cell?__ If oxygen is present in the cell the, lots of organisms will bypass fermentation and go in to cellular respiration, but facultative anaerobic organisms will both ferment and undergo respiration in the presence of oxygen.

__What is lactic-acid fermentation meant for? __ Lactic acid fermentation breaks down the pyruvate into lactic acid. It happens in some bacteria and fungi. For example, in the making of yogurt, bacteria convert lactose into lactic acid, giving yogurt its sour taste. In vertebrates, during periods of rough exercise, cellular respiration may get rid of oxygen in the muscles faster than it can be regained. The shift to glycolysis(the breakdown of glucose by enzymes, releasing energy and pyruvic acid) produces lactic acid.

__Why is lactic acid mostly found in yogurt? Also why is it that this type of fermentation most commonly occur in the muscles? __Because it gives it it’s “yogurt like taste”. It usually occurs in the muscle because the muscle cells make use of oxygen to carry out normal cellular respiration. But in the event where there is absence or lack of such (often occurring during extreme physical efforts), then it will go into lactic acid fermentation. Really, the pyruvic acid becomes lactic acid in this type of fermentation. This lactic acid will be responsible for making the muscle sore and a little stiff especially the day after engaging in a tiring physical activity. The muscle fibers don’t have the mechanism to get rid of this acid, that’s why they have to wait for the acid to steadily be washed away through the blood stream and into the liver (the only organ capable of eliminating lactic acid from the system).

__What is the difference between alcohol fermentation and lactic acid fermentation?__ Lactic acid fermentation has lactic acid as the end product while in alcohol fermentation the end result is ethanol and CO2. Lactic acid fermentation involves the human muscles as well as bacteria found in yogurt. Alcohol fermentation involves yeasts and other bacterial forms~the image below is the process of alcohol fermentation~

//**__WORKS CITED __**// http://image.wistatutor.com/content/feed/u504/Lactic%20acid%20fermentation.jpg http://www.newworldencyclopedia.org/entry/Fermentation http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookGlyc.html http://get-big-fast.com/wp-content/uploads/2009/09/yogurt.jpg http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookGlyc.html __ MAP __