A cytoplasmic anaerobic compulsory primary phase of respiration is found in all living cells.
a) Draw the complete pathway of this process.
b) Calculate and find out how much ATP is generated in this process ???

Dear student,
Cellular respiration is the oxidation of simple nutrients like glucose to release energy. The first phase is anaerobic and can see in almost all organisms. The second phase may vary according to the environmental conditions, requirements, cell types etc. It may be aerobic or anaerobic.
   The first phase which is anaerobic is known as glycolysis. This takes place in the cytoplasm. The 6 carbon molecule glucose is converted into 3 carbon molecule known as pyruvate.

Each glucose produces two pyruvate molecules leading to the formation of 2 NADH and 4 ATP molecules. Since two ATP molecules are utilised in the preparatory phase, the net gain is 2 ATP molecules and 2 NADH molecules.

Regards.

 

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