Biology

1. What is the difference of fatty acid ? oxidation in mitochondrion versus peroxisome? Why such a difference exists?

2. (a) Write down the structure of arachidonic acid (C20:4 ?5,8,11,14).

(b) What do you expect of the melting point of arachidonic compared to that of arachidic acid (C20:0) and why.

(c) Write down the second and third cycles of ?-oxidation of arachidonic acids including the corresponding enzymes.

(d) How many ATPs can be synthesized with the free energy generated from the oxidation of arachidonic acid? Show your calculation.