Pathology EMQ template.

Name: Olivia Raglan

Candidate number:

Theme: Pathology of Infection

OPTION LIST

A	Clostridium difficile	I	Staphylococcus aureus
B	Escherichia coli	J	Vibrio parahaemolyticus
C	Gram negative bacteria	K
D	Gram positive bacteria	L
E	Gram variable bacteria	M
F	Macroscopic morphology	N
G	Microscopic morphology	O
H	Salmonella enteritidis	P

For each scenario below, choose the most appropriate answer from the list above. Each option may be used once, more than once or not at all.

1. Bacteria have thick peptidoglycan cell walls which retain the crystal violet stain when washed with alcohol.

2. Bacteria have thinner walls, containing less peptidoglycan. Washing with alcohol dissolves the lipids on the surface, counterstaining with safranin leaves the cells stained pink.

3. Use of cell shape, size, Gram staining; presence of flagella, pili, fimbriae, capsules.

4. Appearance of colony in broth or on solid media; texture, size, rate of growth, pigmentation.

5. A 33 year old female presents to A+E with vomiting and diarrhoea 2 days after she went out to dinner with friends.

ANSWERS

1. D

2. C

3. G

4. F

5. H