Laboratory Science Microbiology Techniques 2

Question 1

What does MIC stand for in antimicrobial susceptibility testing?

Accepted Answer

Minimum Inhibitory Concentration

Answer

Minimum Inoculation Concentration

Answer

Maximum Inhibitory Colony

Answer

Microbial Identification Code

Question 2

Which staining technique is used to identify Mycobacterium tuberculosis?

Accepted Answer

Ziehl-Neelsen (acid-fast) stain

Answer

Gram stain

Answer

India ink stain

Answer

Giemsa stain

Question 3

Blood cultures are typically incubated for how many days before being reported as negative?

Accepted Answer

5 days

Answer

1 day

Answer

3 days

Answer

14 days

Question 4

What is a presumptive identification when a beta-hemolytic Streptococcus is sensitive to bacitracin?

Accepted Answer

Streptococcus pyogenes (Group A)

Answer

Streptococcus pneumoniae

Answer

Streptococcus agalactiae (Group B)

Answer

Enterococcus faecalis

Question 5

Which organism produces a characteristic 'school of fish' arrangement on gram stain?

Accepted Answer

Corynebacterium diphtheriae

Answer

Streptococcus pneumoniae

Answer

Haemophilus influenzae

Answer

Listeria monocytogenes

Question 6

What is the purpose of the indole test in identifying Enterobacteriaceae?

Accepted Answer

Detect tryptophan degradation to indole by tryptophanase

Answer

Detect urease production

Answer

Detect hydrogen sulfide production

Answer

Detect nitrate reduction