Which bacteria shape is typically described as "comma-shaped"?

The shape of bacteria is a key characteristic in microbiology, and "comma-shaped" specifically refers to the morphology of vibrios. These bacteria are curved rods that resemble a comma due to their distinct shape. Vibrio species, such as Vibrio cholerae, which is known for causing cholera, exhibit this characteristic morphology, which helps in their identification and classification in the laboratory.

In contrast, streptococci are characterized as spherical or ovoid and often appear in chains, while bacilli are rod-shaped bacteria. Cocci, similarly, are also spherical but typically exist as individual cells rather than in the unique, curved form of vibrios. Understanding these shapes and classifications is crucial for microbiologists when identifying and studying different bacterial species.