Mitochondria structure and function relationship

Mitochondria, Function of Mitochondria, Structure of Mitochondria | [email protected]

mitochondria structure and function relationship

Mitochondria are bacteria-sized organelles (about 1 × 2 μm in size), which are found in large numbers in almost all eukaryotic cells. Typically, there are about. Mitochondrial shape varies in living cells and can range from punctuate structures to tubular networks [5]. Mitochondrial distribution inside a cell can be strikingly. The mitochondria has three key parts, matrix, inner membrane, and outer membrane. The matrix is the internal space where the krebs cycle takes plac.

Mitochondria - Definition, Function & Structure | Biology Dictionary

The citric acid cycle, or Krebs cycle, takes place in the mitochondria. This cycle involves the oxidation of pyruvate, which comes from glucose, to form the molecule acetyl-CoA. NADH is then used in the process of oxidative phosphorylationwhich also takes place in the mitochondria. Electrons from NADH travel through protein complexes that are embedded in the inner membrane of the mitochondria.

This set of proteins is called an electron transport chain. Energy from the electron transport chain is then used to transport proteins back across the membrane, which power ATP synthase to form ATP. The amount of mitochondria in a cell depends on how much energy that cell needs to produce.

Relations between structure and function of the mitochondrial ADP/ATP carrier.

Muscle cells, for example, have many mitochondria because they need to produce energy to move the body. Red blood cells, which carry oxygen to other cells, have none; they do not need to produce energy.

Mitochondria are analogous to a furnace or a powerhouse in the cell because, like furnaces and powerhouses, mitochondria produce energy from basic components in this case, molecules that have been broken down so that they can be used.

Mitochondria have many other functions as well.

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They can store calcium, which maintains homeostasis of calcium levels in the cell. Structure of Mitochondria Mitochondria have two membranes, an outer membrane and an inner membrane.


The outer membrane covers the surface of the mitochondrion, while the inner membrane is located within and has many folds called cristae. The folds increase surface area of the membrane, which is important because the inner membrane holds the proteins involved in the electron transport chain. The space between the outer and inner membranes is called the intermembrane space, and the space inside the inner membrane is called the matrix.

This diagram shows the structure of a mitochondrion.

Relations between structure and function of the mitochondrial ADP/ATP carrier.

Evolution of Mitochondria Mitochondria are thought to have evolved from free-living bacteria that developed into a symbiotic relationship with a prokaryotic cell, providing it energy in return for a safe place to live. It eventually became an organelle, a specialized structure within the cell, the presence of which are used to distinguish eukaryotic cells from prokaryotic cells.

Mitochondria Structure Mitochondria are shaped perfectly to maximize their productivity. 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.

The folding of the inner membrane increases the surface area inside the organelle.

mitochondria structure and function relationship

Since many of the chemical reactions happen on the inner membrane, the increased surface area creates more space for reactions to occur. If you have more space to work, you can get more work done. Similar surface area strategies are used by microvilli in your intestines.

mitochondria structure and function relationship

It's not like the movies at all. Mitochondria are special because they have their own ribosomes and DNA floating in the matrix. There are also structures called granules which may control concentrations of ions.

mitochondria structure and function relationship

Cell biologists are still exploring the activity of granules. Using Oxygen to Release Energy How does cellular respiration occur in mitochondria?