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Question

Read the assertion and reason carefully to mark the correct option in question.
Assertion: Glycolysis is the first step of respiration in which glucose completely breaks into CO2 and H2O.
Reason: In this process there is net gain of twenty four molecules of ATP.

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Solution

Assertion - reason relation
Glycolysis is the first step of cellular respiration which occurs in the cytoplasm. It is common to both aerobic and anaerobic respiration. It involves the partial oxidation of glucose into pyruvate molecules.
The process of glycolysis yields 2 ATP and 2 NADH (2*2.5 ATP = 5 ATP). So the total gain of ATP is,7 ATP.
Both assertion and reason are false.

(D) If both assertion and reason are false.


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