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Cell Structure and Cell Organelles

Mitochondria

Often referred to as the powerhouses of the cell, these organelles produce most of the energy available to the cell as ATP.

Fig.1
Mitochondria

Usually bean-shaped or spherical organelle enclosed by a double membrane.

Inner membrane has many folds and pockets: “cristae mitochondriales” or cristae for short. Main function is cell respiration (respiratory chain): ATP formation via oxygen consumption.

Mitochondria are bounded by two membranes: the inner membrane encloses the matrix and forms folds and pockets called cristae. They provide the mitochondrion with an enormous surface for optimization of the electron transport chain, which generates a proton gradient at the inner membrane for use in the synthesis of ATP (oxidative phosphorylation).

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Fig.2
Cross section of a mitochondrion

Links and Literature

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