Which Metal Cation Is a Component of Over 70 Enzymes

question 21

Multiple Choice

Which metal cation is a component of over 70 enzymes?

• A) Al³⁺
• B) Ca²⁺
• C) Co³⁺
• D) Fe²⁺
• E) Zn²⁺

---

Definitions:

Bacteria

Microscopic single-celled organisms that can be found in a variety of environments, some of which can cause diseases.

Onychomycosis

A fungal infection of the nail that causes discoloration, thickening, and separation from the nail bed.

Inflammation

The body's immune response to infection or injury, characterized by redness, heat, swelling, and pain.

Ecchymosis

A discoloration of the skin resulting from bleeding underneath, typically caused by bruising.