Texas Wastewater Class B Practice Exam

What does the term 'pathogenic' refer to?

1. Capable of causing disease

2. Harmful to the environment

3. Beneficial for health

4. Non-contagious

The correct answer is: Capable of causing disease

The term 'pathogenic' specifically refers to the capability of an organism to cause disease in a host. When something is classified as pathogenic, it indicates that it has the potential to produce harmful effects, often manifesting as an illness or health disorder. This can include bacteria, viruses, fungi, or other microorganisms that can invade the body, multiply, and lead to a variety of diseases. The other definitions provided do not align with the meaning of 'pathogenic.' While being harmful to the environment relates to ecological impact, it doesn't encapsulate the specific connotation of causing disease. Similarly, beneficial organisms or non-contagious pathogens do not fit the definition of pathogenic, which strictly emphasizes the ability to induce illness. Thus, the selected answer accurately reflects the primary essence of what pathogenic means.