MICROBIO

Question 1

What is the Gram stain finding compatible with Neisseria gonorrhoeae?
A. Gram-negative diplococci, intracellular
B. Gram-negative bacilli, in clusters
C. Gram-positive cocci, in pairs and chains
D. Gram-positive bacilli with terminal
swelling, in chains

Answer 1

A. Gram-negative diplococci, intracellular

Question 2

Gram-negative bacilli, in clusters

Answer 2

Pseudomonas

Question 3

Gram-positive cocci in pairs and chains

Answer 3

Streptococcus

Question 4

Gram-negative, intracellular diplococci

Answer 4

Neisseria gonorrhoeae

Question 5

Gram-positive bacilli with terminal swelling, in chains

Answer 5

Clostridium

Question 6

Entamoeba Histolytica
Entamoeba coli
Giardia lamblia
Iodamoeba butschlii

• Mature cyst (infective stage to host) contains 1-4 nuclei, with rounded or cigar-shaped chromatoidal bars
• Trophozoites ingests RBC

Answer 6

Entamoeba Histolytica

Question 7

Entamoeba Histolytica
Entamoeba coli
Giardia lamblia
Iodamoeba butschlii

• Cyst contains 6-8 nuclei with very diffuse and eccentric karyosomes, with needle-like/splinter-shaped chromatoidal bodies
• Trophozoites does not ingest RBC

Answer 7

Entamoeba coli

Question 8

Entamoeba Histolytica
Entamoeba coli
Giardia lamblia
Iodamoeba butschlii

Ovoid cyst with 1 nuclei, “basket of flowers”, and prominent glycogen vacuole
• Trophozoites never ingest RBC

Answer 8

Iodamoeba butschlii

Question 9

Entamoeba Histolytica
Entamoeba coli
Giardia lamblia
Iodamoeba butschlii

Ovoid cyst with 4 nuclei, 4 median bodies
• Trophozoite: Old man with glasses
• Steatorrhea marks severe Giardiasis

Answer 9

Giardia lamblia

Iodamoeba butschlii