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Transcript 
Mitochondria & Chloroplasts
Mighty Mitochondria
Cellular distribution of mitochondria
Fluorescence micrograph of a Cos-7 cell. Mitochondria (green) &
Microtubules (red)
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Fig. 19-1
Electron micrograph of a thin section of a mitochondrion
Fig. 19-1
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Comparison of
mitochondria &
bacteria
organization
Fig. 19-2
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Mitochondrial
DNA
Glycolysis and
Lipid Oxidation
Provide AcetylCoA to the
Mitochondria for
the Citric Acid
Cycle
Citric Acid Cycle Generates Reducing Potential as NADH and
FADH2 used for Oxidative Phosphorylation
Disease causing mutations of mitochondrial proteins
Fig. 19-6
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Machinery for importing
proteins into mitochondria
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Fig. 18-3
Import of proteins into the mitochondrial matrix
Fig. 18-4
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Import of the ADP/ATP antiporter into the inner membrane
Fig. 18-5
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Roles of mitochondria in apoptosis
Fig. 46-15
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Clever Chloroplasts
Electron micrograph of a thin section of a chloroplast
Fig. 19-7
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
Copyright 2008 by Saunders/Elsevier. All rights reserved.
Fig. 19-8
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. 18-6
Copyright 2008 by Saunders/Elsevier. All rights reserved.
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