Lab 13-16 Worksheet questions & interpretation of data tables

Lab 13-

Susceptible
Resistant
Intermediate

Drug worked

Drug did not work
Drug kinda worked

Lab 13 - Which drug would you prescribe due to zone

Lab 13 - Zone of inhibition of drug

Lab 14 - Selective property of MSA

Salt

Lab 14 - what gram bacteria for MAC plate

Gram -

Lab 14 - what gram bacteria for MSA

Gram +

Lab 14 - What are coliforms?

Ferment lactose

Lab 14 - Which bacteria species used

Escherichia coli

Lab 14 - Is a MAC plate & MSA plate both selective and differential

yes

Lab 14 - Count # of colonies. One 100 bacteria/mL & 11 colonies =

11×100 = 1100

Lab 14 - Does patient have UTI with 1100 threshold?

Yes, the presence of 1100 colonies indicates a possible urinary tract infection.

lab 14 -

E coli count

UTI

Less 100
1200

Lab 15 - Check to see how many bubbles you see

There will be 3 sets of 3 tubes,
First set has 2 bubbles

Second set has 2 bubbles

Third set has 0 bubbles

Use MPN determination table.

Go down table = 2, 2, 0 = 21 MPN Index

Lab 15 - What sugar is fermenting

Lactose

Lab 15 - What does the bubbles indicate

Carbon dioxide