HUMAN PHYSIOLOGY
BREATHING AND RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glycolysis is anaerobic, yet requires oxygen
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Glycolysis is anaerobic, yet apart of the aerobic pathway
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Glycolysis is aerobic, yet requires does not require oxygen
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Glycolysis is anaerobic, yet apart of the anaerobic pathway
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Detailed explanation-1: -Glycolysis is a pathway in which the breakdown of glucose to pyruvic acid occurs. It results in partial oxidation of glucose. It occurs in both aerobic and anaerobic organisms.
Detailed explanation-2: -Glycolysis occurs in both aerobic and anaerobic states. In aerobic conditions, pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation leading to the net production of 32 ATP molecules. In anaerobic conditions, pyruvate converts to lactate through anaerobic glycolysis.
Detailed explanation-3: -Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. If oxygen is present, the pathway will continue on to the Krebs cycle and oxidative phosphorylation. However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.
Detailed explanation-4: -So, the correct option is ‘Glucose is partially oxidised’ and ‘It’s key product is triose sugar’.
Detailed explanation-5: -Glycolysis produces 2 ATP per glucose molecule, and thus provides a direct means of producing energy in the absence of oxygen. This process of breaking down glucose in the absence of oxygen is aptly named anaerobic glycolysis.[1]