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Question

Which of the following statements is/are not true?
A. One ATP molecule yields 23 kJ of energy.
B. Pentose phosphate pathway was discovered by Hatch and Slack.
C. When tripalmitin is used as a substrate, the RQ is 0.7.
D. Energy released by one molecule of glucose, on complete oxidation corresponds to 3600 kJ.

A
A, B and D only
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B
C and D only
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C
A and D only
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D
A, C and D only
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Solution

The correct option is A A, B and D only
When ATP molecule breaks into ADP molecule it will give up to around 30.5 kJ of energy.

One glucose molecule releases 36-38 molecules of ATP which means in total one glucose molecule on complete oxidation releases up to 1164-1173 kJ/mol of energy.

Pentose phosphate pathway or phosphogluconate pathway was discovered by Warburg and Dickens. It is also called as HMP (hexose monophosphate shunt) pathway.

Tripalmitin is triglyceride which is derived from the fatty acid palmitic acid its respiratory quotient (RQ) is less than 1 as it consumes less oxygen than the carbon release which is found to be 0.7.

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