NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Microorganisms having the ability to adapt readily to the often rapid changes in O2 availability in soil are
A
Facultative aerobes
B
microaerophiles
C
aerotolerant anaerobes
D
all of the above
Explanation: 

Detailed explanation-1: -Bacteria that require oxygen to grow are called obligate aerobic bacteria. In most cases, these bacteria require oxygen to grow because their methods of energy production and respiration depend on the transfer of electrons to oxygen, which is the final electron acceptor in the electron transport reaction.

Detailed explanation-2: -An aerobic environment is characterized by the presence of free oxygen (O2) while an anaerobic environment lacks free oxygen but may contain atomic oxygen bound in compounds such as nitrate (NO3), nitrite (NO2), and sulfites (SO3).

Detailed explanation-3: -Bacteria that grow best in a higher concentration of CO2 and a lower concentration of oxygen than present in the atmosphere are called capnophiles.

Detailed explanation-4: -Facultative anaerobes are bacteria that can grow in both the presence or absence of oxygen. In addition to oxygen concentration, the oxygen reduction potential of the growth medium influences bacterial growth.

There is 1 question to complete.