Mitochondria & Chloroplasts. Mighty Mitochondria.

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Presentation transcript:

Mitochondria & Chloroplasts

Mighty Mitochondria

Cellular distribution of mitochondria Fluorescence micrograph of a Cos-7 cell. Mitochondria (green) & Microtubules (red) Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Electron micrograph of a thin section of a mitochondrion Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Comparison of mitochondria & bacteria organization Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Mitochondrial DNA

Glycolysis and Lipid Oxidation Provide Acetyl- CoA to the Mitochondria for the Citric Acid Cycle

Citric Acid Cycle Generates Reducing Potential as NADH and FADH 2 used for Oxidative Phosphorylation

Disease causing mutations of mitochondrial proteins Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Machinery for importing proteins into mitochondria Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Import of proteins into the mitochondrial matrix Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Import of the ADP/ATP antiporter into the inner membrane Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Roles of mitochondria in apoptosis Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Clever Chloroplasts

Electron micrograph of a thin section of a chloroplast Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Photosynthetic machinery of chloroplasts and cyanobacteria Copyright 2008 by Saunders/Elsevier. All rights reserved. Fig. 19-7

Chloroplast DNA

Tobacco Chloroplast DNA

Comparison of photosynthetic systems that produce ATP Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

Light Reactions Synthesis of ATP and NADPH Series of reaction centers transport e - 's & generate H + gradient –Light harvesting antennae (chlorophyll & other pigments –Photosystem II –Quinone –Photosystem I –Ferridoxin –NADP reductase

Dark Reactions Calvin Cycle –Synthesis of triose phosphates Carboxylation

Pathways for protein import into chloroplasts Fig Copyright 2008 by Saunders/Elsevier. All rights reserved.

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