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If glucose is labeled in C3, how many turns in the TCA cycle would it take...

If glucose is labeled in C3, how many turns in the TCA cycle would it take to release the label as CO2?

a. the label is released before acetyl CoA enters the cycle

b. 1 turn

c. 2 turns

d. 3 turns

e. half of the label is released after three turns.

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Answer #1

e. half of the label is released after three turns .

reason- because glucose have 6 carbons and it is produced in c3 cycle , but it is break down in TCA cycle and due to this reason the option e. is correct.

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