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In how many steps, CO(2) is released in ...

In how many steps, `CO_(2)` is released in aerobic respiration of pyruvic acid

A

One

B

Six

C

Three

D

Twelve

Text Solution

Verified by Experts

The correct Answer is:
C
In the Kreb cycle three molecules of `CO_2` are released per molecules of pyruvic acid.
(I) Pyruvic acid `{:(rarrCO_2),(rarr),("pyruvate decarboxylase"):}` Acetyl COA
(II) Citric acid `{:(" "rarrCO_2),(rarr),("Isocitrate dehydraogenate"),("and decarboxylase"):}` 5 alpha Ketoglutarate
(III) 5 alpha Ketoglutarate `{:(" "rarrCO_2),(rarr),("carboxylase"):}` Succinic acid
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