CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the rate of cellular respiration does not change
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feedback inhibition slows down cellular respiration
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feedback inhibition speeds up cellular respiration
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the cell receives a signal that there is a need for more ATP
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Detailed explanation-1: -ATP, for instance, is a “stop” signal: high levels mean that the cell has enough ATP and does not need to make more through cellular respiration. This is a case of feedback inhibition, in which a product “feeds back” to shut down its pathway.
Detailed explanation-2: -Feedback inhibition regulates glycolysis. Cellular respiration is a multi-step process, including glycolysis, the citric acid cycle, and oxidative phosphorylation. Like many biochemical pathways, it’s controlled in part by feedback inhibition: ATP, the end product of OXPHOS, inhibits the beginning of glycolysis.
Detailed explanation-3: -In case when the ATP (Adenosine Triphosphate ) accumulates in the cell along with the glucose molecules, then they are converted to the glycogen molecule in the liver. The reason behind this includes the storage of the energy for further use.
Detailed explanation-4: -Cellular respiration is used to generate usable ATP energy in order to support many other reactions in the body. ATP is particularly important for energetically unfavorable reactions that would otherwise not occur without an energy input.
Detailed explanation-5: -If glycolysis is inhibited, the level of ATP will drop as the molecules of ATP are used for various cellular functions. If the level of ATP gets too high in the cell, the enzymes that catalyze the reactions of glycolysis are inhibited.