Question

Explain the three pathway of breakdown of gulocose in living organisms

Answer 1

Answer:

Breaking down of glucose can occur by various pathways ; ⑴ In presence of oxygen : - Breaking down of glucose into pyruvate takes place in Mitochondria of a cell. ... - In absence of Oxygen, glucose breakdown into pyruvate in cytoplasm only.

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Answer 2

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In the process of respiration, the first step is the breakdown of glucose, a 6-carbonmolecule breaks into 2 molecules of 3-carbon molecule called pyruvate. This process takes place in the cytoplasm. ... The subsequent breakdown pathway depends on the absence or presence of oxygen as follows (i) Aerobic respiration it takes place in the mitochondria in the presence of oxygen. Pyruvic acid is converted into carbon dioxide, and water thus releasing a lot of energy. (ii) Anaerobic respiration It takes place in the cytoplasm in the absence of oxygen. Pyruvic acid is converted either into CO2 and ethanol (in case of microbes, i.e., fermentation in yeast) or into lactic acid (in the case of muscle cells during sudden activity in humans

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