Multiple Choice
Which term best describes the contamination that results from the spread of bacteria?
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1. Introduction to Microbiology
Introduction to Bacteria
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Which bacterial shape is characterized by spherical cells arranged singly, in pairs, chains, or clusters?
A
Vibrio
B
Bacillus
C
Coccus
D
Spirillum
Verified step by step guidance1
Understand the basic bacterial shapes: Vibrio are comma-shaped rods, Bacillus are rod-shaped, Spirillum are spiral-shaped, and Coccus are spherical-shaped bacteria.
Recognize that the question asks for a spherical bacterial shape that can be found arranged singly, in pairs, chains, or clusters.
Recall that Cocci (plural of Coccus) are spherical bacteria and their arrangements depend on their pattern of cell division and how cells remain attached after division.
Identify common arrangements of Cocci: single cells (single), pairs (diplococci), chains (streptococci), and clusters (staphylococci).
Conclude that the bacterial shape described in the question is Coccus, as it matches the spherical shape and the described arrangements.
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