Wisconsin Esthetics State Board Practice Test

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Which of the following best describes a characteristic of Cocci bacteria?

  1. They are always rod-shaped

  2. They can be spherical or in clusters

  3. They have a spiral shape

  4. They are only found in pairs

The correct answer is: They can be spherical or in clusters

Cocci bacteria are primarily characterized by their spherical shape, which can vary in arrangement. The term "cocci" encompasses various forms, such as single spheres, pairs (diplococci), chains (streptococci), and clusters (staphylococci). This versatility in arrangement allows cocci to present in different groupings, making them distinct from other bacterial forms, such as bacilli (which are rod-shaped) or spirilla (which have a spiral shape). Therefore, the correct description focuses on their ability to appear as spherical units or in clusters, highlighting their diversity in structure and growth patterns within the larger category of bacteria.

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