Which of the following is NOT a type of bacteria?

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Question restatement: Which of the following is NOT a type of bacteria?

Option 1: bacilli
This term refers to rod-shaped bacteria. The prefix 'bacill-' is used in microbiology to describe elongated, cylindrical bacteria, such as Bacillus species. So this is indeed a type/category of bacteria, not a trick.

Option 2: fusilli
Fusilli is famously known as a spiral, corkscrew-shaped pasta. It is a food product, not a biological classification. Since it does not denote any bacterial form or morphology, this option stands out as not being a bacterium.

Option 3: spirilla
Spirilla describe spiral or twisted-rod shaped bacteria. This is a recognized bacterial morphology, exemplified by organisms like Spirillum species. Therefore, this is a valid bacterial type descriptor, not the correct choice for NOT a type of bacteria.

Option 4: cocci
Cocci are spherical bacteria, a classic bacterial form seen in many genera such as Streptococcus and Staphylococcus. This is a standard bacterial shape, so it is indeed a type of bacteria.

Summary of misconceptions to avoid: The word 'fusilli' might look like a scientific term to some, but in biology it does not refer to bacteria. The other three options are well-established bacterial shapes, each representing a real taxonomy or morphology rather than a food product.

Therefore, among the given choices, fusilli is the item that does not correspond to any bacteria, as it is a pasta shape rather than a bacterial form.

HLTED-1-21177-S25 Quiz Ch 10

Which of the following is NOT a type of bacteria?

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