Diagrammatically represent the process of breakdown of glucose in a cell: 3 a) In the absence of oxygen in muscle tissue and in yeast. b) In the presence of oxygen in body cells.
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SalmanRizwan
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Diagrammatically represent the process of breakdown of glucose in a cell:
a) In the absence of oxygen in muscle tissue and in yeast.
b) In the presence of oxygen in body cells.
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YanaRajan21 Ambitious
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Explanation:
Glucose is broken down into a three carbon molecule called pyruvate in the cell cytoplasm. Pyruvate is further broken down by different ways to provide energy in various organisms.
i.In yeast cells, during fermentation, pyruvate is converted into ethanol and carbon dioxide in the absence of oxygen.
ii. In mitochondria, breakdown of pyruvate takes place in presence of oxygen to give rise three molecules of carbon dioxide and water.
iii. Sometimes, when there is lack of oxygen, especially during vigorous activity, in our muscles, pyruvate is converted into lactic acid. Concept insight: Students should know various types of respiration.
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