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What are the protein complexes embedded in the inner mitochondrial membrane that perform a series of redox reactions and pump protons from the matrix into the intermembrane space?

What are the protein complexes embedded in the inner mitochondrial membrane that perform a series of redox reactions and pump protons from the matrix into the intermembrane space?

The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.

Why are the components of the electron transport chain embedded in the inner mitochondrial membrane?

Why are the components of the electron transport chain embedded in the inner mitochondrial membrane rather than floating freely in the cytoplasm of mitochondrial matrix? To generate and maintain the proton gradient essential for ATP production.

Which proteins are embedded in the inner mitochondrial membranes of Cristae in the mitochondrion?

Respiratory chain complexes and supercomplexes. The proton gradient across the cristae membrane is generated by three large membrane protein complexes of the respiratory chain in the cristae, known as complex I (NADH/ubiquinone oxidoreductase), III (cytochrome c reductase) and IV (cytochrome c oxidase) (Fig.

In which protein complex in the inner mitochondrial membrane is oxygen reduced?

Complex III pumps protons through the membrane and passes its electrons to cytochrome c for transport to the fourth complex of proteins and enzymes. Complex IV reduces oxygen; the reduced oxygen then picks up two hydrogen ions from the surrounding medium to make water.

What are the inner and outer membranes of mitochondria made up of?

They are made of two membranes. The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix.

Does protein synthesis take place in the mitochondria?

This means that the protein synthesis takes place in the cytoplasm, on top of the rough endoplasmic reticulum, in the mitochondria and on the mitochondrial membrane.

What helps mitochondria make proteins by itself?

Mitochondria has its own DNA and ribosomes so they are able to produce specific proteins to meet their own requirements. They are also known as semi-autonomous organelle. In humans, 615 distinct types of proteins have been identified from cardiac mitochondria, whereas in rats 940 proteins have been reported.

How does Mitochondria produce energy for the cell answers?

Mitochondria are the powerhouses of the cell because they “burn” or break the chemical bonds of glucose to release energy to do work in a cell. This releases energy (ATP) for the cell. The more active a cell (such as a muscle cell), the more mitochondria it will have.

What cells are responsible for telling Eric to eat more food?

The brain cells are responsible for telling Eric to eat more food. 7. Brain cells need to send messages over long distances, which is why they are so long.

What signals your brain that you are hungry?

“Hunger hormones” (ghrelin) in your blood and an empty stomach signal the brain when you’re hungry. Nerves in the stomach send signals to the brain that you’re full, but these signals can take up to 20 minutes to communicate — and by that time, you may have already eaten too much.

What signals hunger in the brain?

Hunger is partly controlled by a part of your brain called the hypothalamus, your blood sugar (glucose) level, how empty your stomach and intestines are, and certain hormone levels in your body. Fullness is a feeling of being satisfied. Your stomach tells your brain that it is full.

Which cell structure is responsible for controlling what enters the cell?

Cell membrane