Cholesterol, Porphyrin, and Fatty acid synthesis

Question 1

1st reaction of FA synthesis

Answer 1

Acetyl-Coa Carboxylase
Acetyl-Coa + HCO3- + ATP-> Malyonyl-CoA

Uses Biotin, Bicarbonate, and ATP

Question 2

Fatty Acid Synthase enzyme

Answer 2

Phosphopantetheine coenzyme