Table of Contents
- 1 Why is the inner layer of mitochondria folded?
- 2 What are the folds on the inner mitochondrial membrane called quizlet?
- 3 What is the inner membrane of the mitochondria made of?
- 4 Are cristae the same as inner membrane?
- 5 What does the inner membrane do in the mitochondria?
- 6 What separates the inner and outer membranes of mitochondria?
- 7 What is the structure of the inner mitochondrial membrane?
- 8 How does cristae increase the surface area of the mitochondrial membrane?
- 9 What is the space between the cytosol and the inner membrane?
Why is the inner layer of mitochondria folded?
The inner membrane of Mitochondria is deeply folded to create a large surface area for chemical reactions of oxidative phosphorylation, i.e. the process of converting food sugars into energy (ATP) to take place.
What are the folds on the inner mitochondrial membrane called quizlet?
The inner mitochondrial membrane contains numerous inward folds called cristae, which greatly increase the surface area of this membrane.
What is the inner membrane of the mitochondria made of?
The mitochondrial inner membrane is made primarily of a phospholipid bilayer, just like the cell membrane. Embedded in this bilayer are various proteins that serve to carry out the electron transport chain. The membrane has folds called christae that increase its surface area.
What cell is mitochondria found in?
Mitochondria are found in all body cells, with the exception of a few. There are usually multiple mitochondria found in one cell, depending upon the function of that type of cell. Mitochondria are located in the cytoplasm of cells along with other organelles of the cell.
What is the purpose of the folds of the inner mitochondrial membrane quizlet?
Explain. The numerous folds of the inner mitochondrial membrane increase the surface area for additional electron transport chains. Increased surface area also allows more area for protons to accumulate outside the membrane to increase the concentration gradient necessary for chemiosmosis.
Are cristae the same as inner membrane?
The outer membrane surrounds the mitochondria. It is a semi-permeable membrane similar to the cell membrane. The inner membrane is impermeable. The folds created by the inner membrane are known as the cristae, which contain proteins and molecules that participate in cellular respiration.
What does the inner membrane do in the mitochondria?
The inner membrane is also loaded with proteins involved in electron transport and ATP synthesis. This membrane surrounds the mitochondrial matrix, where the citric acid cycle produces the electrons that travel from one protein complex to the next in the inner membrane.
What separates the inner and outer membranes of mitochondria?
Mitochondria posses their own DNA and ribosomes. 6. Just like the chloroplast, the stroma separates the inner and outer membranes of the mito- chondria. ATP synthase pumps, by active transport, hydrogen ions back into the mitochondria matrix.
Where is the mitochondria located in a sperm cell?
The head of the sperm contains the DNA, which when combined with the egg’s DNA, will create a new individual. The tip of the sperm head is the portion called the acrosome, which enables the sperm to penetrate the egg. The midpiece contains the mitochondria which supplies the energy the tail needs to move.
What is a mitochondria simple definition?
Mitochondria. = 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).
What is the structure of the inner mitochondrial membrane?
The inner mitochondrial membrane ( IMM) is the mitochondrial membrane which separates the mitochondrial matrix from the intermembrane space. The structure of the inner mitochondrial membrane is extensively folded and compartmentalized.
How does cristae increase the surface area of the mitochondrial membrane?
Cristae significantly increases the total membrane surface area compared to a smooth inner membrane and thereby the available working space. The inner membrane creates two compartments.
What is the space between the cytosol and the inner membrane?
The region between the inner and outer membrane, called the intermembrane space which is largely continuous with the cytosol, and the more sequestered space inside the inner membrane, called matrix.
How are cristae and the inner boundary membrane separated?
Cristae and the inner boundary membranes are separated by junctions. The end of cristae are partially closed by transmembrane protein complexes that bind head to head and link opposing crista membranes in a bottleneck-like fashion.