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Cell Structure and Cell Organelles


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


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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Cross section of a mitochondrion

Links and Literature

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