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14 Cards in this Set
- Front
- Back
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Define respiration
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A series of enzyme catalysed reactions which release chemical energy from organic molecules in order to synthesise ATP
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Explain the process of glycolysis
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a) A glucose molecule is phosphorylated into 1,6-hexose bisphosphate
b) This molecule then splits into 2 x triose phosphate c) 2 x triose phosphate then undergo a dehydrogenation reaction to form 2 x pyruvate |
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How many reduced energy result from one glucose molecule undergoing glycolysis
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2 NADH2
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Where does glycolysis take place?
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cytoplasm
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How many reduced NAD and reduced FAD molecules are produced per glucose molecule in the Kreb’s cycle?
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6 NADH2
2 FADH2 |
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How many ATP per glucose molecule are produced by the Kreb’s cycle?
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2 ATP
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What are the roles of NAD and FAD in respiration?
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Reduced NAD (and FAD) deliver the hydrogen to the electron transport system in the inner mitochondrial membrane so acting as triggers for this system.
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Describe the process of anaerobic respiration in yeast cells from pyruvate.
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Pyruvate is decarboxylated to ethanal which is reduced to ethanol, using NADH2 to NAD
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Describe the process of anaerobic respiration in yeast cells from pyruvate.
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Pyruvate is decarboxylated to ethanal which is reduced to ethanol, using NADH2 to NAD
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Suggest why substrate level phosphorylation is referred to as the simplest and oldest way to make ATP
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It doesn't require the Electron Transport Chain
It doesn't require oxygen It doesn't require ATP synthase |
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Describe the process of anaerobic respiration in yeast cells from pyruvate.
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Pyruvate is decarboxylated to ethanal which is reduced to ethanol, using NADH2 to NAD
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Suggest why substrate level phosphorylation is referred to as the simplest and oldest way to make ATP
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It doesn't require the Electron Transport Chain
It doesn't require oxygen It doesn't require ATP synthase |
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Where does the link reaction occur?
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Mitochondrial matrix
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Describe the link reaction
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Pyruvate is converted to acetyl coenzyme A through a decarboxylation and dehydrogenation reaction with the insertion of coenzyme A
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