Colorado Cosmetology Written Practice Exam

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Colonies of bacteria that adhere together and to environmental surfaces are called:

Biofilms
Granulomas
Microcysts
Plasmids

The correct answer is: Biofilms

Biofilms are bacterial communities that stick together and attach to surfaces, often forming a protective layer. This allows them to persist in harsh environments and may contribute to antibiotic resistance. Granulomas, microcysts, and plasmids are not used to describe this type of bacterial growth. Granulomas are a type of immune cell formation, microcysts are small sacs that develop from bacterial cells, and plasmids are small pieces of DNA that can be transferred between bacteria. These terms do not accurately describe the cohesive bacterial colonies seen in biofilms.