Identify A, B, C, D and E in the given figure. (a)...

\text { Identify A, B, C, D and E in the given figure. }(a) A-Matrix, B-Outer membrane, C-Crista, D-Inner membrane, E-Inner-membrane space (b) A-Crista, B-Outer membrane, C-Inner-membrane space, D-Inner membrane, E-Matrix (c) A-Matrix, B-Inner membrane, C-Inner-membrane space, D-Crista, E-Outer membrane (d) A-Inner-membrane space, B-Outer membrane, C-Matrix, D-Crista, E-Inner membrane

\text { Identify A, B, C, D and E in the given figure. }(a) A-Matrix, B-Outer membrane, C-Crista, D-Inner membrane, E-Inner-membrane space
(b) A-Crista, B-Outer membrane, C-Inner-membrane space, D-Inner membrane, E-Matrix
(c) A-Matrix, B-Inner membrane, C-Inner-membrane space, D-Crista, E-Outer membrane
(d) A-Inner-membrane space, B-Outer membrane, C-Matrix, D-Crista, E-Inner membrane

Key Concepts

Cristae

Cristae are the infoldings of the inner mitochondrial membrane that significantly increase its surface area. This is critical for efficient electron transport and ATP generation during oxidative phosphorylation, making cristae essential for the mitochondrion's role in energy metabolism.

Inner Mitochondrial Membrane

The inner mitochondrial membrane is highly folded to form structures called cristae, which increase the surface area available for the electron transport chain and ATP synthesis. This membrane is impermeable to most molecules, maintaining the proton gradient necessary for energy production.

Intermembrane Space

The intermembrane space is the compartment between the outer and inner mitochondrial membranes. It plays a key role in cellular respiration by serving as a reservoir for protons that are pumped across the inner membrane, which is essential for establishing the proton gradient used to synthesize ATP.

Matrix

The matrix is the innermost compartment of a mitochondrion that contains enzymes, mitochondrial DNA, and ribosomes. It is where important metabolic processes such as the Krebs cycle occur, playing a crucial role in cellular respiration and energy production.

Outer Mitochondrial Membrane

The outer mitochondrial membrane encloses the entire organelle and functions as a selectively permeable barrier. It contains channels, known as porins, that allow the passage of ions and small molecules, facilitating communication between the mitochondrion and the cytoplasm.

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