If oxygen supplies are depleted during exercise, the body will use anaerobic respiration to produce the energy being demanded. What effects might this have on the athlete? Explain your answer.
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By respiring anaerobically, energy is produced in smaller amount for each molecule of glucose. In this condition, glucose is not fully oxidised to carbon dioxide and water, rather it forms lactic acids. So when lactic acid is present, The build up of lactic acid in the muscles and causes the muscles to ache, this prevents the tissues from severe oxygen deprivation, preventing any tissue damage
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When they stop doing exercise the oxygen levels in the body will be brought back to normal values. ATP produced could be used to replenish glycogen stored and to get rid of the lactic acid.
The question is not correct. Anaerobic respiration is not used in muscle tissues, lactic acid fermentation is. Some people erroneously treat fermentation and anaerobic respiration are the same thing; they are not. Fermentations utilize glycolysis and then go through steps to regenerate chemicals needed for glycolysis. The electron transport chain (ETC) is not utilized.
Anaerobic respiration is identical to aerobic respiration in all ways but one. The final electron acceptor is the difference. In aerobic respiration the final acceptor is O2. In anaerobic respiration the final electron acceptor is not O2. There are multiple different acceptors so I am not going to list them.
Also @mrdoldum @shaniehh Anaerobic respiration is around 20 times less efficient that aerobic respiration. This could cause an athelete to grasp for air. A common example of this is when you are running long distances.
@sunleaf01 I don't think humans do any anaerobic respiration. I may be wrong, but I thought the only other option humans do is lactic acid fermentation.