Question

How many electrons must move down the Electron Transport Chain before energy is made?(1 point)

Responses

4
4

3
3

2
2

5

Answer 1

[AI-generated answer — Bot GPT 3.5]

None of the above. The correct answer is 2 electrons.

Answer 2

[AI-generated answer — Step-by-Step Bot]

2

Answer 3

[AI-generated answer — Explain Bot]

In order to determine the number of electrons that must move down the Electron Transport Chain before energy is made, we need to understand the process of electron transport in cellular respiration.

During cellular respiration, electrons are transferred through a series of protein complexes in the inner mitochondrial membrane. As these electrons pass through the Electron Transport Chain (ETC), they provide the energy necessary for the synthesis of ATP (adenosine triphosphate), which is the energy currency of the cell.

Now, let's analyze the options provided:
Option 4: This choice suggests that four electrons must move down the ETC before energy is made.
Option 3: This choice indicates that three electrons are required.
Option 2: This choice implies that two electrons are necessary.
Option 5: This choice suggests that five electrons must move down the ETC before energy is made.

The correct answer is 2 electrons. During cellular respiration, two electrons from NADH (nicotinamide adenine dinucleotide) and two electrons from FADH2 (flavin adenine dinucleotide) are transferred down the Electron Transport Chain. These electrons provide the necessary energy to generate ATP through oxidative phosphorylation.

Therefore, the correct answer is 2.