New Jersey State Board Esthetics Practice Exam

What is collagen primarily known for?

1. An energy source for cells

2. A fibrous protein providing skin form and strength

3. A type of fat found in the skin

4. A sugar that helps in skin hydration

The correct answer is: A fibrous protein providing skin form and strength

Collagen is primarily known for being a fibrous protein that provides structure and strength to the skin, along with other connective tissues throughout the body. It plays a crucial role in maintaining the skin's elasticity and firmness, contributing to its overall appearance and health. As a major component of the extracellular matrix, collagen helps to support the skin’s structure, preventing sagging and contributing to the skin's resilience against aging and environmental damage. The other options do not accurately characterize collagen. While energy sources for cells are typically carbohydrates and fats, collagen does not serve this purpose. Additionally, collagen is a protein, not a type of fat, so it cannot be classified as such. Furthermore, it is not correct to refer to collagen as a type of sugar; instead, sugars and other carbohydrates are primarily responsible for helping the skin retain hydration. Therefore, recognizing collagen's role as a fibrous protein is key to understanding its importance in skin health and aesthetics.