Arachidonic acid oxidation involves
how many cycles of beta oxidation?
a) l0
b) 20
c) 9
d) 8
Correct Answer - C
Ans. is ‘c’ i.e., 9
Number of acetyl CoA formed in (3-oxidation of fatty acids = Number
of carbon atoms/2.
Number of cycles of (beta-oxidation required -No of carbon / 2(-1)
Hence arachidonic acid with 20 carbon atoms undergoes p oxidation
to form 10 acetyl CoA by going through (20/2) - 1 cycles i.e., 9
cycles.