Washington Esthetician State Board Practice Exam

Which type of bacteria is specifically known to cause disease?

1. Pathogenic bacteria

2. Non-pathogenic bacteria

3. Aerobic bacteria

4. Facultative bacteria

The correct answer is: Pathogenic bacteria

Pathogenic bacteria are specifically known to cause disease because they have the ability to invade host tissues, overcome the immune system, and produce harmful toxins or other factors that lead to illness. These bacteria can trigger various infections and diseases in humans and other organisms. Understanding the role of pathogenic bacteria is crucial for estheticians, as they need to maintain strict hygiene and sanitation practices to prevent infections and ensure the safety of their clients during treatments. Non-pathogenic bacteria, on the other hand, generally do not cause disease and can even be beneficial, contributing to processes such as digestion or skin health. Aerobic bacteria require oxygen for growth, and facultative bacteria can grow with or without oxygen, but neither classification inherently indicates a disease-causing capability. Hence, pathogenic bacteria is the only type that is specifically recognized for its disease-causing potential.