Fermentation take place when there is a lack of oxygen in a cell. Without oxygen, the only process that can create ATP from glucose is glycolysis. However, NADH is created during glycolysis, and must be turned back to in order to continue metabolizing glucose with glycolysis. Fermentation, therefore, has the main responsibility of regenerating .

Fermentation take place when there is a lack of oxygen in a cell. Without oxygen, the only process that can create ATP from glucose is glycolysis. However, NADH is created during glycolysis, and must be turned back to in order to continue metabolizing glucose with glycolysis. Fermentation, therefore, has the main responsibility of regenerating .

Fermentation take place when there is a lack of oxygen in a cell. Without oxygen, the only process that can create ATP from glucose is glycolysis. However, NADH is created during glycolysis, and must be turned back to in order to continue metabolizing glucose with glycolysis. Fermentation, therefore, has the main responsibility of regenerating .

When glucose is fermented, it forms the product lactate. Lactate can then continue on to be fermented to acetate. However, the other answer choices do not represent the correct direction from reactant to product in fermentation. In some organisms, ethanol and carbon dioxide may be produced via fermentation, but carbon dioxide is a byproduct, not a major product in these organisms.

When glucose is fermented, it forms the product lactate. Lactate can then continue on to be fermented to acetate. However, the other answer choices do not represent the correct direction from reactant to product in fermentation. In some organisms, ethanol and carbon dioxide may be produced via fermentation, but carbon dioxide is a byproduct, not a major product in these organisms.

Because the sprinter is exercising at a high intensity, his body is metabolizing its fuel under anaerobic conditions. Lactic acid fermentation is the conversion of pyruvate to lactate, and occurs only under anaerobic conditions. Glycolysis always occurs under anaerobic conditions, and glucose needs to be broken down to fuel the sprinter. The Cori cycle is the process that describes anaerobic metabolism on a larger scale (the conversion of glucose to pyruvate, to lactate, and back to glucose). Finally, because the athlete is using up his glucose, glycogenolysis will occur in order to convert some of his stored glucose (glycogen) to blood glucose.

The only answer choice remaining is gluconeogenesis. Gluconeogenesis and glycolysis occurring at the same time would be called a "futile cycle". They are opposing pathways, and if one is occurring, there is no need for the other to occur, that would be wasteful. We already established that glycolysis was occurring, so it is unlikely that gluconeogenesis would also occur.

Because the sprinter is exercising at a high intensity, his body is metabolizing its fuel under anaerobic conditions. Lactic acid fermentation is the conversion of pyruvate to lactate, and occurs only under anaerobic conditions. Glycolysis always occurs under anaerobic conditions, and glucose needs to be broken down to fuel the sprinter. The Cori cycle is the process that describes anaerobic metabolism on a larger scale (the conversion of glucose to pyruvate, to lactate, and back to glucose). Finally, because the athlete is using up his glucose, glycogenolysis will occur in order to convert some of his stored glucose (glycogen) to blood glucose.

The only answer choice remaining is gluconeogenesis. Gluconeogenesis and glycolysis occurring at the same time would be called a "futile cycle". They are opposing pathways, and if one is occurring, there is no need for the other to occur, that would be wasteful. We already established that glycolysis was occurring, so it is unlikely that gluconeogenesis would also occur.

Because the sprinter is exercising at a high intensity, his body is metabolizing its fuel under anaerobic conditions. Lactic acid fermentation is the conversion of pyruvate to lactate, and occurs only under anaerobic conditions. Glycolysis always occurs under anaerobic conditions, and glucose needs to be broken down to fuel the sprinter. The Cori cycle is the process that describes anaerobic metabolism on a larger scale (the conversion of glucose to pyruvate, to lactate, and back to glucose). Finally, because the athlete is using up his glucose, glycogenolysis will occur in order to convert some of his stored glucose (glycogen) to blood glucose.

The only answer choice remaining is gluconeogenesis. Gluconeogenesis and glycolysis occurring at the same time would be called a "futile cycle". They are opposing pathways, and if one is occurring, there is no need for the other to occur, that would be wasteful. We already established that glycolysis was occurring, so it is unlikely that gluconeogenesis would also occur.

When glucose is fermented, it forms the product lactate. Lactate can then continue on to be fermented to acetate. However, the other answer choices do not represent the correct direction from reactant to product in fermentation. In some organisms, ethanol and carbon dioxide may be produced via fermentation, but carbon dioxide is a byproduct, not a major product in these organisms.

Fats are broken down into acetyl-CoA to be used for energy. However, large quantities of alcohol will produce large quantities of acetyl-CoA when metabolized. Acetyl-CoA can be converted into fatty acids when it is in excess. Then fatty acids can assemble into triglycerides and be stored as fat.