Cellular respiration refers to the process by which the end products of digestio
ID: 277007 • Letter: C
Question
Cellular respiration refers to the process by which the end products of digestion are transformed to release energy for the various activities of the organism. 58) a) List the three stages of cellular respiration and the cellular compartment in which they occur. (6 pts.) b) Provide two reasons why glucose is phosphorylated upon entering the cell c How many net ATPs are produced from one molecule of glucose during d) How many molecules of pyruvate are produced from one molecule of e What is the final hydrogen/electron acceptor during cellular respiration? (2 pts.) stage one? (1 pt.) glucose? (1 pt.) (1 pt.)Explanation / Answer
Answer 58]
a] Three stages of cellular respiration and the compartment in which they occure are
1.Glycolysis - is the first stage of cellular respiration and is occur in cytoplasm.
2.citric acid /tricarboxylic acid /creb cycle -is second stage of cellular respiration & occure in mitochondria.
3.Electron transport chain- is third stage of cellular respiration occure in inner mitochondrial membrane.
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b] Glucose is phosphorylated when it enters in the cell because:
1.To make ATP- The phosphoryl groups attached to glycolytic intermediates will be donated to ADP to become ATP.
the phosphoryl groups came from the 2 ATPs that were invested plus inorganic phosphate groups that are floating around in the cell.
2.To trap glucose - When insulin is released from the pancreas after a meal,it signals the tissues to uptake glucose.When glucose enters the cells via glucose transporters,there is a chance for them to leave the cell.If we are in need of energy,and the breakdown of glucose will provide that energy,we dont want glucose to leave the cell.that is why glucose is phosphorylated by ATP to become glucose -6 phosphate,which now bears a charge.
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c] The net ATP produced from one molecule of glucose during stage one i.e. glycolysis is 2(Two)
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d] two molecules of pyruvate are produced from one molecule of glucose by the process of glycolysis.
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e] Final hydrogen/electron acceptor during cellular respiration is Oxygen
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