NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A barophile would grow best in
A
acid pools.
B
the deep oceans.
C
hot geyser springs.
D
salt lakes.
Explanation: 

Detailed explanation-1: -A barophile is an organism that needs a high-pressure environment in order to grow. Barophiles are a type of an extremophile. An example of a high-pressure habitat is the deep-sea environment, such as ocean floors and dee lakes where the pressure can exceed 380 atm.

Detailed explanation-2: -Barophiles are defined as organisms which grow optimally or preferentially at pressures greater than atmospheric pressure (0.1 MPa). Barophilic bacteria have been isolated from various deep-sea environments and have been shown to grow rapidly at low temperatures and high pressures (11, 35, 36).

Detailed explanation-3: -Barophilic bacteria are defined as those displaying optimal growth at pressures >40 MPa, whereas barotolerant bacteria display optimal growth at pressure <40MPa and can grow well at atmospheric pressure.

Detailed explanation-4: -This strain is thereby barotolerant below 95°C and strictly barophile between 95 and 100°C.

Detailed explanation-5: -A piezophile, also called a barophile, is an organism which thrives at high pressures, such as deep sea bacteria or archaea. They are generally found on ocean floors, where pressure often exceeds 380 atm (38 MPa). Some have been found at the bottom of the Pacific Ocean where the maximum pressure is roughly 117 MPa.

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