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Published byWhitney Quinn Modified over 9 years ago
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RESPIRATION & OXIDATION
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GLYCOLYSIS Step 1: Phosphorylation: Glucose + 2ATP Fructose 1,6-diphosphate + 2ADP Step 2: Splitting 6C sugar to 2 x 3C sugars: Fructose 1,6-diphosphate 2 Glyceraldehyde Phosphate Step 3: Energy release: 2 Glyceraldehyde Phosphate 2 Pyruvate (oxypropanoate) 8ADP 8ATP © 2010 Paul Billiet ODWSODWS
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KREB'S CYCLE Enzymes located in the inner matrix of mitochondria (in eukaryotes) Note: Number of mitochondria per cell = activity of the cell On average 1000 per cell (between 20 and 10 000) © 2010 Paul Billiet ODWSODWS
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outer membrane inner membrane Mitochondrial envelope Inter membrane space Cristae Inner matrix Image credit: MitochondriaMitochondria
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Step 1: Synthesising ACETYL COENZYME A Pyruvate Acetyl CoA + CO 2 (3C) (2C) (1C) CYTOPLASM MITOCHONDRIA 3ADP3ATP Also produced from fatty acids and amino acids © 2010 Paul Billiet ODWSODWS
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Step 2: Oxidising Acetyl CoA Breathed out or used by chloroplasts 2CO 2 KREB'S CYCLE Acetyl CoA + Oxaloacetate Citrate + CoA (2C) (4C) (6C) back to the cytoplasm 4 x 1 / 2 O 2 4H 2 O 12ATP12ADP © 2010 Paul Billiet ODWSODWS
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The Kreb's Cycle was discovered by using inhibitors and isolating enzymes from tissues rich in mitochondria Total ATP from 1 molecule of glucose in AEROBIC CONDITIONS Glycolysis - 2 (phosphorylation) +8 Kreb's Cycle +30 (2x15) TOTAL 36 ATP © 2010 Paul Billiet ODWSODWS
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