Why are NADH and FADH2 necessities in the electron transport chain?(1 point)
Responses
They remove electrons from the electron transport chain.
They remove electrons from the electron transport chain.
They move electrons to the electron transport chain.
They move electrons to the electron transport chain.
They accept electrons in order to power the electron transport chain.
They accept electrons in order to power the electron transport chain.
They move down the electron transport chain.
They move down the electron transport chain.
The correct answer is: They move electrons to the electron transport chain.
NADH and FADH2 are necessary in the electron transport chain because they carry high-energy electrons from the previous stages of cellular respiration (such as glycolysis and the citric acid cycle) to the electron transport chain. These electron carriers donate the electrons to proteins embedded in the inner mitochondrial membrane, which in turn pass the electrons along a series of protein complexes in the electron transport chain. This flow of electrons ultimately leads to the production of ATP, the main energy currency of cells. So, NADH and FADH2 play a crucial role in transferring electrons to the electron transport chain, providing the necessary energy to generate ATP.