Scelta multipla
Which bacterial genus is typically rod-shaped (bacillus morphology) when observed under a light microscope?
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7. Prokaryotic Cell Structures & Functions
Bacterial Cell Morphology & Arrangements
Scelta multipla
Vibrio cholerae causes the disease cholera. Based on the name of the bacterium, what is its shape?
A
Spherical.
B
Straight cylinder.
C
Curved rod
D
Chains of cocci.
E
Chains of rods.
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Understand the naming conventions in microbiology: The name of a bacterium often provides clues about its shape and characteristics.
Recognize the term 'Vibrio': In microbiology, 'Vibrio' refers to a genus of bacteria that are typically curved or comma-shaped rods.
Differentiate between bacterial shapes: Bacteria can be spherical (cocci), rod-shaped (bacilli), or spiral-shaped. Vibrio species are known for their curved rod shape.
Consider the options given: The options include spherical, straight cylinder, curved rod, chains of cocci, and chains of rods. The term 'Vibrio' aligns with the curved rod shape.
Conclude based on the genus name: Since 'Vibrio' indicates a curved rod shape, the correct answer is 'Curved rod'. This matches the typical morphology of Vibrio cholerae.
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