Question

Write examples of coordination metal complexes in biology.

Hint:

Remember the central metal for each: \(Mg\) for green (plants), \(Fe\) for red (blood), and \(Co\) for \(B_{12}\).

Answer 1

Step 1: Understanding the Concept:
Many vital biological functions depend on metal ions which exist as coordination complexes with various ligands in the body.
Step 2: Detailed Explanation:
1. Hemoglobin: A coordination complex of Iron (\(Fe^{2+}\)) found in red blood cells; it is responsible for oxygen transport.
2. Chlorophyll: A coordination complex of Magnesium (\(Mg^{2+}\)) found in plants; it is essential for photosynthesis.
3. Vitamin \(B_{12}\): (Cyanocobalamin) A coordination complex of Cobalt (\(Co^{3+}\)); it is necessary for nerve tissue health and red blood cell production.
Step 3: Final Answer:
Key biological complexes include Chlorophyll (\(Mg\)), Hemoglobin (\(Fe\)), and Vitamin \(B_{12}\) (\(Co\)).