Which of the following represents a scientific name?

A scientific name in microbiology consists of two parts: the genus name and the species name, both of which are typically in Latin. This naming convention is known as binomial nomenclature, established by Carl Linnaeus.

In this case, all options provided represent valid scientific names.

Escherichia coli is the scientific name for a bacterium commonly found in the intestines of humans and warm-blooded organisms. Streptococcus pyogenes identifies a species responsible for various infections, including strep throat. Staphylococcus aureus refers to a bacterium often associated with skin infections, respiratory infections, and food poisoning.

Each name adheres to the rules of binomial nomenclature, where the genus name is capitalized and the species name is in lowercase. When taken together, these names precisely identify and classify these organisms within the scientific community, confirming that all the examples given are appropriate representations of scientific names.