The porphyrin ring of a chlorophyll molecule is structurally similar to the heme group of hemoglobin. Which atom occupies the center of the chlorophyll ring?
Q1. The porphyrin ring of a chlorophyll molecule is structurally similar to the heme group of hemoglobin. Which atom occupies the center of the chlorophyll ring?
Answer: Magnesium
Explanation: Magnesium is the central atom in chlorophyll's porphyrin ring. Iron is the central atom in the heme group of hemoglobin.