Question

question 14
a microaerophile
a grows best in an anaerobic jar
b requires a small amount of oxygen but wont grow at normal atmospheric levels of oxygen
c needs normal atmospheric levels of oxygen
d grows with or without oxygen

Explanation:

Microaerophiles are organisms that require a small amount of oxygen for growth. However, normal atmospheric levels of oxygen (about 21%) are toxic to them.

• Option A: Anaerobic jars are for anaerobes (organisms that grow without oxygen), not microaerophiles.
• Option C: Microaerophiles do not need normal atmospheric oxygen levels.
• Option D: Organisms that grow with or without oxygen are facultative anaerobes.

Answer:

B. requires a small amount of oxygen but won't grow at normal atmospheric levels of oxygen