Biochemistry - Oxidative Phosphorylation - Discussion

Discussion :: Oxidative Phosphorylation - Section 1 (Q.No.8)


How many CO2 molecules are exhaled for each O2 molecule utilized in cellular respiration?

[A]. 1
[B]. 3
[C]. 6
[D]. 12

Answer: Option A


No answer description available for this question.

Trafton said: (May 18, 2016)  
This is highly dependent on the state of the organism. This describing RER (CO2/O2) during periods of high glycolysis, RER = 1; during sedentary and moderate workloads 0 < RER < 1.

Wisam said: (Jan 11, 2018)  
Simply you can get the answer by knowing that oxidation no of carbon in a bioorganic molecule is -4 while in CO2 is +4 which mean there is 8 e lost. i.e. 4 for each O atom in O2 molecule.

These four electrons transferred from glucose through its aerobic oxidation to last acceptor the oxygen (passed through TCA and electron transport chain.

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