NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When microbes live independently but cooperate and share nutrients, it is called
A
symbosis.
B
antibiosis.
C
mutualism.
D
synergism.
Explanation: 

Detailed explanation-1: -Microbial synergy is a phenomenon in which aerobic and anaerobic microbes support each other’s growth and proliferation. In this process aerobes invade and destroy host tissues, reduce tissue oxygen concentration and redox potential, thus creating favorable conditions for anaerobic growth and proliferation.

Detailed explanation-2: -When microbes live independently but cooperate and share nutrients, it is called. synergism.

Detailed explanation-3: -Definition of synergistic growth Thus, a mixed culture is considered to exhibit synergism when it reached significantly higher density (OD595) than its reference culture. No distinction was made whether the higher density resulted from the enhanced growth of all three bacteria or just one or two in the mixed culture.

Detailed explanation-4: -Answer and Explanation: Microbial Example of synergism: Synergism between Enterococcus faecalis and Lactobacillus arobinosus. Enterococcus faecalis require folic acid to grow but unable to produce it.

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