PE - Microscopic examination

Question 1

Answer 1

Staphylococcus aureus

• Gram+ cocci in grape like clusters

Question 2

Answer 2

Streptococcus pyogenes

• Gram⁺ cocci in chains

Question 3

Answer 3

Streptococcus pneumoniae

• Gram⁺ diplococci

Question 4

Answer 4

Neisseria

• Gram diplococci

Question 5

Answer 5

E. coli

• Gram short rods

Question 6

Answer 6

Haemophilus influenzae

• Gram coccobacilli

Question 7

Answer 7

Bacillus cereus

• Large (3-8μm), gram positive rods, spore forming with characteristic squared ends

Question 8

Answer 8

Clostridium perfringens (Gas gangrene)

• Gram positive, large, with centrally located ovale spores

Question 9

Answer 9

Clostridium tetani

Gram positive rods, spores are terminal cells look like drumsticks

Question 10

Answer 10

Corynebacterium diphtheriae

• Gram positive rod, aerobic, non sporeforming
• Resulting in a very irregular appearance (looks like matches) with dark blue volutin granules.

Question 11

Answer 11

Neisseria gonorrhoeae in pus

Question 12

Answer 12

Candida albicans from culture

(similar to s. aureus, but fatter)

Question 13

Answer 13

Trichomonas vaginalis and soor (Candida albicans) positive vaginal smear

Question 14

Answer 14

Leptospira sp.

• Silver impregnation

Question 15

Answer 15

Mycobacterium tuberculosis in sputum

• Ziehl Neelsen staining

Question 16

Answer 16

Plasmodium falciparum

Question 17

Answer 17

Trypanosoma brucei

Question 18

Answer 18

Enterobius vermicularis eggs

• Anorectal cellulose tape preparation (native)