Colorado Cosmetology Written Practice Exam

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All of the following are types of potentially harmful organisms which may cause infections disease EXCEPT:

  1. Bacteria

  2. Fungi

  3. Lactobacillus

  4. Viruses

The correct answer is: Lactobacillus

Bacteria, fungi, and viruses are all types of organisms that can cause infections and diseases in humans. However, lactobacillus is a type of bacteria that is usually beneficial and does not typically cause infections. It is commonly found in probiotic products and helps maintain a healthy balance of bacteria in our bodies. Therefore, it is the exception in this list of potentially harmful organisms.

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