How many electrons must move down the Electron Transport Chain before energy is made?(1 point)
Responses
4
4
2
2
5
5
3
3
The correct answer is 4 electrons.
To determine how many electrons must move down the Electron Transport Chain before energy is made, we need to understand the process of electron transport and how many electrons are involved.
The Electron Transport Chain is the final stage of cellular respiration, a process that occurs in the mitochondria of cells. During electron transport, high-energy electrons from molecules like NADH and FADH2 are passed along a series of protein complexes in the inner membrane of the mitochondria.
Each pair of electrons that enters the Electron Transport Chain leads to the production of three ATP molecules through a process called oxidative phosphorylation. This means that for every pair of electrons, three molecules of ATP are generated.
Therefore, to produce one ATP molecule, we need 2/3 of a pair of electrons, and to generate a whole number of ATP molecules, we'll need a whole number of pairs of electrons. In other words, for energy to be made, we need at least two electrons to move down the Electron Transport Chain.
So, out of the given options, the correct answer is 2. Two electrons need to move down the Electron Transport Chain before energy is made.