Control of Microbial Growth

A nosocomial infection is a:

• Hospital acquired infection

• Highly contagious pathogen that requires strict transmission control conditions

• Minor infection

• An infection spread by close contact with others in the home

An infection that is highly transmissible by respiratory route would fall under what biosafety level (BSL)?

• BSL 1

• BSL 2

• BSL 3

• BSL4

A disinfectant is normally used on the skin.

• True

• False

________ is the suffix that indicates a chemical or process inhibits growth or multiplication of bacteria.

• -stat

• -cide

• -tion

• -a

Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts.

• True

• False

Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms.

• True

• False

Which of the following is the least resistant to antimicrobial control?

• Mycobacterium

• Non-enveloped virus

• Fungi

• Enveloped viruses

Which of the following dies more rapidly?

• Vegetative cells

• Spores

• Active bacterium

• None: they all die at the same rate.

Which of the following concentration of ethanol is the most effective?

• 75%

• 90%

• 95%

• 70%

Tags

NGSS.HS-PS1-5

Which of the following methods of action of microbial control methods includes surfactants?

• Damage to cell wall

• Inhibit synthesis of proteins and nucleic acids

• Alter function of proteins and nucleic acids

• Disrupt cytoplasmic membrane