NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Strict anaerobe
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Obligate aerobe
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Facultative anaerobe that carries out fermentation
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None of the above
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Detailed explanation-1: -Examples of obligately aerobic bacteria include Mycobacterium tuberculosis (acid-fast), Pseudomonas aeruginosa (Gram-negative), Bacillus (Gram-positive), and Nocardia asteroides (Gram-positive). With the exception of the yeasts, most fungi are obligate aerobes.
Detailed explanation-2: -The exponential or log phase is a time of exponential growth. In the stationary phase, growth reaches a plateau as the number of dying cells equals the number of dividing cells.
Detailed explanation-3: -Media: Anaerobic Blood Agar is the best media choice for growing obligate anaerobes. Fresh prepared Nutrient Agar, Tryptic Soy Agar (Soybean Casein Digest Agar), and Standard Methods Agar (Plate Count Agar) are appropriate alternatives for some Clostridium species with an additional period (24 hours) of incubation.