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

So why is oxygen the ultimate electron acceptor?

Explain why oxygen is the ultimate electron acceptor. The strongly electronegative oxygen stabilizes the electrons by combining with two hydrogen ions to form water. Explain the overall concept of how ATP synthase uses the flow of hydrogen ions to produce ATP.

One might also ask how is oxygen an electron acceptor?

Electron acceptors are ions or Molecules that act as oxidizing agents in chemical reactions. In this reaction, the oxygen is reduced to a -2 oxidation state and any hydrogen is oxidized to +1. Oxygen is an oxidizing agent (electron acceptor) and hydrogen is a reducing agent (electron donor).

In relation to this, what is the final electron acceptor in aerobic respiration?

In aerobic organisms During respiration, electrons are accreted transported along an electron transport chain, and the ultimate electron acceptor is oxygen. Molecular oxygen is a strong oxidizing agent, making it an excellent electron acceptor.

What is an end electron acceptor?

An end electron acceptor is a molecule that accepts electrons at the very end of a chain of electron transfers. In aerobic respiration, the terminal electron acceptor is oxygen, which combines with two protons and the electrons gained (from the electron transport chain) to form water.

What is the best electron acceptor?


Where is oxygen used in aerobic respiration?


What does oxygen do in the electron transport chain?

The electron transport chain produces adenosine triphosphate, the most important cell energy. Oxygen acts as the final electron acceptor, helping to move electrons along a chain, resulting in the production of adenosine triphosphate.

Does anaerobic respiration produce carbon dioxide?

Anaerobic respiration produces glucose depleted oxygen. Anaerobic respiration produces lactic acid instead of carbon dioxide and water.

What are the two electron acceptors in aerobic respiration?

Instead, molecules like sulfate (SO4 2- ), nitrate (NO3 – ) or sulfur (S) are used as electron acceptors. These molecules have a lower reduction potential than oxygen; therefore, less energy is produced per glucose molecule under anaerobic than aerobic conditions.

What are the end products of respiration?

The end product of cellular respiration is ATP. The waste products are carbon dioxide and water.

How much CO2 is produced in anaerobic respiration?

Since there are two pyruvate molecules, two carbon dioxide molecules are also produced during anaerobic respiration using the alcoholic fermentation pathway .

What is the first electron acceptor in cellular respiration?


What types of anaerobic respiration are there?

Anaerobic respiration occurs when the amount of oxygen available is too low to support the process of aerobic respiration. There are two main types of anaerobic respiration, alcoholic fermentation and lactic fermentation.

What is the final electron acceptor in anaerobic respiration?

Anaerobic respiration: A molecule other than oxygen is used as a terminal electron acceptor in anaerobic respiration. Many different types of electron acceptors can be used for anaerobic respiration. Denitrification is the use of nitrate (NO3 − ) as a terminal electron acceptor.

What is the electron acceptor for humans in the electron transport chain? ?

Step 4: After typically several Red/Ox transfers, the electron is donated to a molecule known as the terminal electron acceptor. In humans, the terminal electron acceptor is oxygen.

What happens to the electron transport chain without oxygen?

If there is no oxygen, the electron transport chain cannot run because there is no oxygen as the last electron acceptor . This means that the ETC does not accept electrons from NADH as an energy source, so NAD + is not regenerated.

How much NADH is produced during aerobic respiration?

2 carbon dioxide molecules. 1 ATP molecule (or equivalent) 3 NADH and 1 FADH2that transport energy to the last part of the aerobic respiratory pathway.

What is the end product of the electron transport chain?

The end products of the electron transport chain are water and ATP. A number of citric acid cycle intermediates can be diverted into the anabolism of other biochemical molecules, such as B. non-essential amino acids, sugars and lipids.

Is oxygen required for glycolysis?

Glycolysis does not require the presence of oxygen. Therefore, oxygen would not always be required. Glycolysis can be either: Aerobic (oxygen required) – The pyruvate produced by this process can be further oxidized via the citric acid cycle.

What is the last electron acceptor in photosynthesis?

The last Electron acceptor is NADP. In oxygenic photosynthesis, water is the first electron donor, producing oxygen as a waste product. Various electron donors are used in anoxygenic photosynthesis. Cytochrome b6f and ATP synthase work together to create ATP.

Where does the electron transport chain take place?

The electron transport chain runs across the inner mitochondrial membrane. Its main function is to use protons to set up an electrochemical gradient across the inner membrane. The ETC pumps hydrogen ions from the mitochondrial matrix into the intermembrane space.