Multiple Choice Question on Heme synthesis & Related Inherited Disease (Porphyria) In this page, we will review the multiple-choice practice questions on heme synthesis and related inherited disorders including hepatic and erythropoietic porphyria. The biological importance of heme, heme biosynthesis, regulation of heme synthesis, diagnosis, and treatment of porphyria are discussed elsewhere and a link for the page is provided below. Heme is an essential molecule for various biological functions. It plays a crucial role in oxygen transport, energy metabolism, and the functioning of various enzymes. Heme synthesis is regulated to maintain the balance of heme levels in the body. The regulation is primarily achieved through feedback inhibition, where the final product, heme, inhibits the activity of the enzyme ALA synthase to prevent excess heme production. Please review the topics by clicking the link provided below: Page Links Heme Biosynthesis and Regulation Disor...