1.

Animal cells are suspended in a culture medium that contains excess glucose. The graph below shows glucose utilisation under different growth conditions (A),(B), and (C) in the graph indicate A. A-Anaerobic respiration B-Introduction of `O_(2)` to culture medium C- Aerobic respirationB. A-Aerobic respiration B-Introduction of `O_(2)` to culture medium `C`- Anaerobic respirationC. A-Aerobic respiration B-Supply of organic triphosphate C-Aerobic respirationD. A-Aerobic respiration B-Introduction of CO to culture medium C-Anaerobic respiration.

Answer» Correct Answer - a
Anaerobic respiration takes place in the absence of oxygen. It leads to incomplete degradation of substrate into alcohol and `CO_(2)` releasing some energy `(2ATP)`. Aerobic respiration occurs in the presence of oxygen. It results in complet oxidation of substrate into `CO_(2)`, water and energy `(38ATP)`.


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