Colorado Esthetician Written Practice Exam

What does cross-contamination involve?

1. Touching an object without cleaning hands and then touching another object

2. Touching only one object repeatedly

3. Using disposable items multiple times

4. Disinfecting all surfaces before use

The correct answer is: Touching an object without cleaning hands and then touching another object

Cross-contamination involves the transfer of bacteria or other microorganisms from one object to another. In this scenario, the correct answer is "Touching an object without cleaning hands and then touching another object" because it accurately describes how cross-contamination can occur. When a person touches an object without cleaning their hands and then touches another object, they can transfer bacteria or microorganisms between the two objects, increasing the risk of infection or contamination. Option B is incorrect because cross-contamination involves the transfer of microorganisms between objects, not just touching one object repeatedly. Option C is incorrect because using disposable items multiple times does not necessarily lead to cross-contamination if proper hygiene practices are followed. Option D is also incorrect because disinfecting all surfaces before use is a good practice to prevent contamination but does not specifically relate to cross-contamination.