Certified Cheese Professional 2025 – 400 Free Practice Questions to Pass the Exam

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Which of the following is not classified as a type of bacteria?

Lactoferrin

Lactoferrin is a protein that is primarily found in milk and other bodily fluids and plays a key role in the immune system and iron metabolism. It is not classified as a type of bacteria but rather as a glycoprotein with antibacterial properties. In contrast, E. Coli, Staphylococcus aureus, and Yersinia enterocolitica are all specific types of bacteria. E. Coli, for instance, is a common bacterium found in the intestines of humans and animals, some strains of which can cause food poisoning. Staphylococcus aureus is known for causing a variety of infections, while Yersinia enterocolitica is associated with gastrointestinal illness. Therefore, the correct answer highlights the distinction between a protein and bacteria, making it clear that Lactoferrin does not fit into the bacterial classification.

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E. Coli

Staphylococcus aureus

Yersinia enterocolitica

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