What is the function of the electron transport chain in cellular respiration quizlet?

The Krebs cycle produces the electron carriers NADH and FADH2 in the matrix of the mitochondria. The inner membrane of each mitochondrion contains protein pumps that play a major role in the electron transport chain. At each protein pump, NADH (or FADH2) gives up electrons (e-) and becomes NAD+ (or FAD).

What is the function of the electron transport chain and where does it occur?

The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.

What is the function of the electron transport chain quizlet?

The main purpose of the electron transport chain is to build up a surplus of hydrogen ions (protons) in the intermembrane space sp that there will be a concentration gradient compared to the matrix of the mitochondria. This will drive ATP synthase.

What does electron transport use?

The electron transport chain is the portion of aerobic respiration that uses free oxygen as the final electron acceptor of the electrons removed from the intermediate compounds in glucose catabolism.

What is electron function?

Electrons are the negatively charged particles of atom. Together, all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus. Electrons are extremely small compared to all of the other parts of the atom.

What is the function of the electrons in the electron transport chain?

In the electron transport chain, electrons are used to release energy, develop a chemical gradient, and form an electrochemical gradient that is finally used to produce ATP molecules.

What is the function of the electron transport chain in photosynthesis?

Electron transport helps establish a proton gradient that powers ATP production and also stores energy in the reduced coenzyme NADPH. This energy is used to power the Calvin Cycle to produce sugar and other carbohydrates.

What are the electron acceptors in cellular respiration?

Explanation: In cellular respiration, oxygen is the final electron acceptor. Oxygen accepts the electrons after they have passed through the electron transport chain and ATPase, the enzyme responsible for creating high-energy ATP molecules.

Why is the electron transport chain important?

The ETC is the most important stage of cellular respiration from an energy point of view because it produces the most ATP. When a cell needs energy, it breaks the third phosphate group bond and uses the resulting energy.

What is the purpose of electrons in the electron transport chain?

The direct purpose of moving electrons down the electron transport chain is to pump protons (hydrogen ions) into the intermembrane space. This creates a chemiosmotic gradient that the cell uses to generate ATP by selectively allowing hydrogen ions to move back into the mitochondrial matrix.

What is work function used for?

In solid-state physics, the work function (sometimes spelled workfunction) is the minimum thermodynamic work (i.e., energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface.

What happens to electrons during photosynthesis?

Absorption of light excites an electron to a higher energy state, thus converting the energy of sunlight to potential chemical energy. High-energy electrons are then transferred through a series of membrane carriers, coupled to the synthesis of ATP and NADPH.