Respiration- Glycolysis 0.0 / 5 ? BiologyRespirationA2/A-levelOCR Created by: TaraCBeckworthCreated on: 14-12-16 14:22 What is glucose? A 6 carbon sugar (hexose) 1 of 13 Briefly summarise respiration The breakdown of complex organic molecules linked to synthesise ATP 2 of 13 Where does respiration take place in prokaryotes? Cell membrane 3 of 13 What are the steps of respiration? Glycolysis, link reaction then krebs cycle 4 of 13 Where does glycolysis occur? In the cytoplasm of cell 5 of 13 What type of reaction is glycolysis? Anaerobic reaction as it doesn't require oxygen 6 of 13 What is the first step in glycolysis? (Phosphorylation) The glucose undergos phosphorylation as the phosphate molecules from 2 ATP are attached to the glucose 7 of 13 What is the second step? The phosphorylation causes the glucose to split into 2 triose phosphate molecules 8 of 13 What is the third step? More phosphorylation onto the triose phosphate, making triose biphosphate 9 of 13 What is the forth step? The triose biphosphate molecules are oxidised (their hydrogen ions are removed) to form 2 pyruvate molecules 10 of 13 What happens to the removed hydrogen ions? They are taken up by the coenzymes NAD which become reduced NAD 11 of 13 How many ATP molecules are produced in the forth step? 4 12 of 13 What is the net production of ATP in glycolysis? 2 13 of 13
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