Question
How many electrons must move down the Electron Transport Chain before energy is made?(1 point)
Responses
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3
4
4
2
2
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Responses
3
3
4
4
2
2
5
5
Skip to navigation
page 14 of 14
Answers
GPT-4o mini
In the context of cellular respiration and the electron transport chain (ETC), typically, 4 protons (H+) are pumped across the inner mitochondrial membrane for every pair of electrons that move through the ETC. This proton gradient is then used by ATP synthase to produce ATP.
However, if you are looking for how many electrons need to move down the chain to produce a certain amount of ATP, it is generally accepted that 2 electrons moving through the ETC can lead to the production of approximately 1 molecule of ATP depending on the conditions.
That being said, the typical way of thinking about it is that for 2 electrons moving through the chain, enough energy (in the form of the proton gradient) can be created to synthesize ATP.
Given your options, the closest answer appears to be:
2 electrons.
However, if you are looking for how many electrons need to move down the chain to produce a certain amount of ATP, it is generally accepted that 2 electrons moving through the ETC can lead to the production of approximately 1 molecule of ATP depending on the conditions.
That being said, the typical way of thinking about it is that for 2 electrons moving through the chain, enough energy (in the form of the proton gradient) can be created to synthesize ATP.
Given your options, the closest answer appears to be:
2 electrons.