Michigan Esthetician State Board Practice Exam

Which type of bacteria is described as pus forming and grows in clusters?

1. Bacilli

2. Cocci

3. Spirilla

4. Vibrios

The correct answer is: Cocci

The type of bacteria described as pus-forming and growing in clusters is cocci. Cocci are spherical-shaped bacteria, and when they multiply, they often do so in clusters or chains. The presence of these bacteria is commonly associated with various infections, and they are a significant concern in esthetics and skincare due to their potential to cause conditions like folliculitis and other skin infections. In contrast, bacilli are rod-shaped bacteria and can be found in single forms or arranged in chains, but they do not typically form pus. Spirilla are spiral-shaped bacteria that do not grow in clusters and are also not pus-forming. Vibrios are comma-shaped bacteria that can cause gastrointestinal diseases and do not form pus in clusters either. Understanding these distinctions helps in recognizing the types of bacteria that may affect the skin and emphasizes the importance of sanitation and proper skin care practices in esthetics.