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The Bacterial Balancing Act

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Questions and Answers

Which term is used to describe microbes that live on us and in us and do not normally cause disease?

Normal flora (correct)
Indigenous microflora
Opportunistic pathogens
Pathogens

What is the term used for microbes that can cause disease but usually do not?

Pathogens
Normal flora
Opportunistic pathogens (correct)
Indigenous microflora

Which microbe is an example of an opportunistic pathogen?

E. coli
Streptococcus
Clostridium difficile
Staphylococcus epidermidis (correct)

What is the term used for microbes that are awaiting the opportunity to cause disease?

Opportunistic pathogens (D) Signup and view all the answers

Which microbe is now a common cause of infections in patients with indwelling vascular catheters?

Staphylococcus epidermidis (A) Signup and view all the answers

Which type of media encourages the growth of very small organisms and offers different gaseous atmospheres within the same medium?

Broth media (A) Signup and view all the answers

What is a disadvantage of using broth media?

Sub-culture to solid media is necessary to determine purity (A) Signup and view all the answers

What is a disadvantage of using solid media?

Bacteria may be missed due to small numbers (C) Signup and view all the answers

What advantage does solid media have over broth media?

Bacteria have unique colonial morphology (D) Signup and view all the answers

What advantage does broth media have over solid media?

Encourages the growth of very small organisms (A) Signup and view all the answers