What is the typical size of Escherichia coli, a member of the Enterobacteriaceae family known for causing diarrheal illnesses?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Biology Mcqsbiology-mcqs
Published
12 May 2018
Last updated
28 May 2026

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Choose the correct answer

Explanation

Option A represents an unrealistically broad range, while B reflects sizes typical of viruses. D is smaller than the average size of E. coli. The correct size range for E. coli is 1.1 to 1.5 micrometers wide and 2.0 to 6.0 micrometers long, as indicated in option C.

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