Admin What is the main process of mitochondria?
Mitochondria convert chemical energy from the food we eat into an energy form that the cell can use. This process is called oxidative phosphorylation. The Krebs cycle produces a chemical called NADH. NADH is used by enzymes embedded in the cristae to produce ATP.
What are the characteristics of mitochondria?
Characteristics of Mitochondria (i) The mitochondria are sausage-shaped or cylindrical having a diameter of 0.2-1.0 µm and average 0.5 µm and length 1.0-4.1 µm. (ii) Each mitochondrion is a double membrane bound structure. (iii) The inner compartment is called the matrix.
What are three facts about the mitochondria?
Interesting Facts about Mitochondria
- They can quickly change shape and move around the cell when needed.
- When the cell needs more energy, the mitochondria can reproduce by growing larger and then dividing.
- Mitochondria are very similar to some bacteria.
- Different mitochondria produce different proteins.
What are the most important feature of mitochondria?
Mitochondria play a critical role in the generation of metabolic energy in eukaryotic cells. As reviewed in Chapter 2, they are responsible for most of the useful energy derived from the breakdown of carbohydrates and fatty acids, which is converted to ATP by the process of oxidative phosphorylation.
What is the central role of the mitochondria in cellular activities?
So much so that there were nearly twice as many papers on mitochondria published in 2011 (5921) as there were in 1973.
How are the shape and positioning of mitochondrial cells regulated?
Mitochondrial shape and positioning in cells is crucial and is tightly regulated by processes of fission and fusion, biogenesis and autophagy, ensuring a relatively constant mitochondrial population. Mitochondrial dysfunction is implicated in metabolic and age related disorders, neurodegenerative diseases and ischemic injury in heart and brain.
How is mitochondrial dysfunction related to heart disease?
Mitochondrial dysfunction is implicated in metabolic and age related disorders, neurodegenerative diseases and ischemic injury in heart and brain. Keywords: mitochondria, oxidative phosphorylation, apoptosis, intracellular calcium, mitochondrial fission Introduction
Where does Ca 2 + in mitochondria come from?
Mitochondria take up Ca 2+ through the mitochondrial calcium uniporter complex to regulate energy production, cytosolic Ca 2+ signalling and cell death 1,2.
How is cytochrome c produced in the mitochondria?
In mice, the disruption of the unique somatic Cyt c gene causes embryonic lethality. 1 Cyt c is synthesized in the cytosol as an apoprotein and, upon translocation to the mitochondria, it associates with the heme prosthetic group.