Iron Is Added to the Protoporphyrin IX Structure in Heme

question 78

Multiple Choice

Iron is added to the protoporphyrin IX structure in heme biosynthesis by which of the following enzymes?

• A) ferrochelatase
• B) delta-aminolevulinate synthase
• C) heme oxygenase
• D) biliverdin reductase
• E) catalase

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Definitions:

Respiratory System

The biological system consisting of specific organs and structures used for gas exchange in animals and plants, primarily involving the inhalation of oxygen and the exhalation of carbon dioxide in humans and other mammals.

Menarche

The onset of menstruation.

Menstruation

Menstruation is the monthly process by which the female body sheds the lining of the uterus, usually associated with bleeding, denoting the non-pregnant state.

Primary Aging

The gradual and inevitable process of bodily decline that occurs throughout life, independent of disease or environmental factors.