Utah Esthetician State Board Practice Exam

Which of the following is an example of a non-pathogenic fungus?

1. Yeast

2. Virus

3. Molds

4. Bacteria

The correct answer is: Molds

The correct choice representing a non-pathogenic fungus is yeast. Yeasts are type of fungi that can be non-pathogenic, meaning they do not cause disease in humans under normal circumstances. In fact, many types of yeast, such as Saccharomyces cerevisiae (brewer's or baker's yeast), are used in food production and brewing processes. They contribute to fermentation, which is beneficial in various culinary applications. Molds, which are types of fungi as well, can be both pathogenic and non-pathogenic depending on the species. While some molds are harmless and can even be used in food production (like certain cheeses), others can produce toxins that pose health risks. Therefore, the term "molds" encompasses a broader range and is not definitive for non-pathogenicity. Viruses are not fungi at all; they are a completely different category of infectious agents that can only reproduce inside host cells. Bacteria, similarly, are single-celled organisms that can be pathogenic or non-pathogenic. Thus, yeast is specifically recognized for its beneficial roles while still falling under the umbrella of non-pathogenic fungi.