Multiple Choice
Which of the following is NOT a method by which antibiotics attempt to kill bacteria?
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1. Introduction to Microbiology
Members of the Bacterial World
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Which of the following best describes the appearance of streptococci under the microscope?
A
Clusters of spherical cells
B
Spiral-shaped cells
C
Chains of spherical cells
D
Pairs of rod-shaped cells
Verified step by step guidance1
Understand the morphology terms: 'cocci' refers to spherical-shaped bacteria, while 'bacilli' refers to rod-shaped bacteria, and 'spirilla' refers to spiral-shaped bacteria.
Recall that 'strepto-' is a prefix used to describe bacteria arranged in chains, whereas 'staphylo-' describes bacteria arranged in clusters.
Identify that streptococci are spherical bacteria ('cocci') arranged in chains ('strepto-').
Eliminate options that describe clusters (which would be staphylococci), spiral shapes (spirilla), or rod shapes (bacilli), as these do not match streptococci.
Conclude that the best description of streptococci under the microscope is 'chains of spherical cells'.
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