Multiple Choice
Why is it difficult to group bacteria into species?
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1. Introduction to Microbiology
Members of the Bacterial World
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Which of the following antibiotics is an inhibitor of cell wall synthesis?
A
Streptomycin
B
Penicillin
C
Tetracycline
D
Ciprofloxacin
Verified step by step guidance1
Understand that antibiotics can target different bacterial processes, such as protein synthesis, DNA replication, or cell wall synthesis.
Recall that cell wall synthesis inhibitors prevent bacteria from forming a proper peptidoglycan layer, which is essential for bacterial cell wall integrity.
Identify the mode of action of each antibiotic listed: Streptomycin and Tetracycline inhibit protein synthesis by targeting the bacterial ribosome, Ciprofloxacin inhibits DNA gyrase affecting DNA replication.
Recognize that Penicillin is a beta-lactam antibiotic that inhibits the enzymes involved in peptidoglycan cross-linking, thereby blocking cell wall synthesis.
Conclude that among the options, Penicillin is the antibiotic that inhibits cell wall synthesis.
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