9.2 Oxygen Requirements for Microbial Growth

What is the ideal concentration of oxygen for a particular microorganism called?

• Optimum oxygen concentration

• Anaerobic threshold

• Maximum permissive oxygen concentration

• Minimum permissive oxygen concentration

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which type of microorganism requires oxygen for growth but can also grow in its absence?

• Facultative anaerobe

• Microaerophile

• Obligate anaerobe

• Obligate aerobe

Which of the following is an example of an obligate aerobe?

• Staphylococcus aureus

• Clostridium perfringens

• Mycobacterium tuberculosis

• Lactobacillus

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

What is the function of the candle in a candle jar?

• To maintain humidity

• To sterilize the environment

• To consume oxygen and release CO2

• To provide light for photosynthesis

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which enzyme converts hydrogen peroxide to water and oxygen?

• Superoxide dismutase

• Peroxidase

• Catalase

• Oxidase

What type of bacteria grow at the bottom of a thioglycolate tube?

• Microaerophiles

• Facultative anaerobes

• Obligate anaerobes

• Obligate aerobes

Tags

NGSS.HS-LS2-3

What type of microorganism is indifferent to the presence of oxygen?

• Aerotolerant anaerobe

• Microaerophile

• Facultative anaerobe

• Obligate aerobe

Which of the following is a common method to grow capnophiles?

• Using a thioglycolate tube

• Using a CO2 incubator

• Using a candle jar

• Using an anaerobic chamber

Which microorganism is known to cause gas gangrene?

• Clostridium perfringens

• Staphylococcus aureus

• Listeria monocytogenes

• Escherichia coli