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How does the proton gradient affect the pH of the mitochondrial matrix and the intermembrane space?

Oxidative phosphorylation Protons are pulled into the intermembrane space by the energy of the electrons going through the electron transport chain. A pH difference between the matrix and intermembrane space creates an electrochemical gradient by which ATP synthase can pass a proton into the matrix favorably.

How protons move from the intermembrane space to the matrix?

The proton gradient generated by proton pumping during the electron transport chain is a stored form of energy. When protons flow back down their concentration gradient (from the intermembrane space to the matrix), their only route is through ATP synthase, an enzyme embedded in the inner mitochondrial membrane.

How many protons are pumped from the mitochondrial matrix and into the intermembrane space via complex II?

four protons

What happens to the pH in the mitochondrial intermembrane space as ATP is synthesized?

Low pH increases the concentration of base causing mitochondria to pump out H+ to the inter membrane space leading to ATP production. The high external acid concentration causes an increase in H+ in the inter membrane space leading to increased ATP production by ATP synthetase.

What part of mitochondria is most acidic?

inner membrane space

Is the intermembrane space acidic or basic?

Protons diffuse rapidly, and many buffering compounds exist in the cytosol and the intermembrane space that maintain the pH, so the intermembrane space does not become very acidic. However, the pH of the mitochondrial matrix does change quite a bit.

Where is the electron transport chain located in the mitochondria?

inner mitochondrial membrane

Where is the highest concentration of protons in the mitochondria?

Intermembrane space of mitochondria This process pumps protons (H+) into the intermembrane space. The gradient created (high concentration of protons in the intermembrane space and low concentration in the matrix) causes protons to flow through ATP synthetase in the inner membrane resulting in production of ATP.

How do mitochondria make energy?

Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP).

What does mitochondria use for energy?

Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

Can you increase the number of mitochondria in your cells?

Physical exercise is the best way to increase your oxygen intake, critical for mitochondria’s Krebs cycle. As your body uses up more energy, it will force itself to produce more mitochondria to keep up with the demand.

What process is mitochondria responsible for?

Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.

What process releases the chemical energy stored in food?


Why mitochondria is called Power House?

Mitochondria are known as the powerhouse of the cell because it is responsible for the extracting energy from food through cellular respiration. The energy is released in the form of adenosine triphosphate (ATP). It is an energy currency of the cell.

Why mitochondria is a semi autonomous organelle?

Mitochondria are semi-autonomous due to the presence of their own DNA. Mitochondria also contains ribosomes, which synthesise some of the mitochondrial proteins. DNA in mitochondria contains various genes, which code for 13 proteins required for oxidative phosphorylation.