Multiple Choice
Which of the following microbial forms have the highest resistance to physical and chemical controls?
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1. Introduction to Microbiology
Introduction to Microbiology
Multiple Choice
Which of the following organisms is commonly found in freshwater habitats and can infect humans?
A
Staphylococcus aureus
B
Naegleria fowleri
C
Escherichia coli O157:H7
D
Candida albicans
Verified step by step guidance1
Step 1: Understand the habitat and characteristics of each organism listed. Staphylococcus aureus is typically found on human skin and mucous membranes, not commonly in freshwater environments.
Step 2: Recognize that Escherichia coli O157:H7 is a pathogenic strain of E. coli usually associated with contaminated food and water but is not specifically known as a freshwater organism.
Step 3: Candida albicans is a fungal organism commonly found in human mucosal areas and is not associated with freshwater habitats.
Step 4: Identify Naegleria fowleri as a free-living amoeba that thrives in warm freshwater environments such as lakes and hot springs and is known to infect humans by entering through the nasal passages.
Step 5: Conclude that among the options, Naegleria fowleri is the organism commonly found in freshwater habitats and capable of infecting humans, causing a rare but serious brain infection.
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