Microbiology

Question 1

Bacillus Anthracis

Answer 1

Gram positive

Large, gray, & non-hemolytic on blood agar “Medusa Head” morphology

Whisked eggs consistency

Non-motile

Question 2

Alcaligenes faecalis

Answer 2

Plump gram negative cocci bacilli on gram stain.

Peritrichous flagella

Fruity odor : apples/strawberries

Question 3

Which of the following streptococcus spp. exhibits a positive bile solubility test?

Answer 3

S pneumoniae

Question 4

Pinworm

Answer 4

Enterobius Vermicularis

Question 5

Clonorchis Sinesis

Answer 5

Liver fluke
Found in bile ducts

Question 6

Klebsiella Pneumoniae

Answer 6

Non-Motile

Question 7

Histoplasma Capsulatum

Answer 7

Large, one celled, smooth-to-tuberculate macroconidia, and smooth or echinulate microcondia are typical of mycelial phase growth

Question 8

Sporothrix schenkii (Sporotrichosis)

Answer 8

Lactophenol blue
Causes subcutaneous infections
From contaminated dead/living vegetation
Daisy

Question 9

When considering therapeutic drug monitoring, what is the definition of bioavailability?

Answer 9

The fraction of the administered dose eventually reaches its site of action

Question 10

What is the purpose of C3a and C5a, the split products of the complement cascade?

Answer 10

Cause increased vascular permeability, contraction of smooth muscle, and a release of histamine from basophils

Question 11

RBC inclusion seen with supravital stain

Answer 11

Heinz Bodies

Question 12

Intrinsic Pathway

Answer 12

Factor VIII
Factor IX, XI,XII
Prekallikrein
HMW kiniogen

Question 13

What is the normal myeloid to erythroid ratio in the bone marrow?

Answer 13

2:1 -4:1

Question 14

Mycobacterium tuberculosis

Answer 14

Thin, slightly curved, red-pigmented and beaded.
Arranged in serpentine cords

Question 15

Trich Rome stained organism measuring 15 um was found in a stool sample

Answer 15

Entamoeba Histolytica

Question 16

Streptomyce species

Answer 16

Exhibit colonies that are gray white and relatively smooth

Long slender branching gram positive bacilli

Middlebrook Agar

Question 17

Which is the first marker to become positive after exposure to hepatitis b

Answer 17

HBsAg

Question 18

Bacillus Cereus

Answer 18

Butter consistency on agar

GS: box car

Question 19

Salmonella Typhi

Answer 19

Kligler Iron Agar
Sulfide Indole Motility
Indole Broth
Voges Proskauer broth
Simmons Citrate

Question 20

Oxacillin resistance in clinical strains of staphlococci by the detection of the __ gene

Answer 20

mecA

Question 21

Strict anaerobe, non-motile, GN bacillus , occurring in abscesses & associated with peritonitis

Answer 21

BACTEROIDES

Question 22

Pseudomonas Aeruginosa

Answer 22

Non fermenter

Question 23

Beta lactamase positive organisms

Answer 23

S. Epi, P. Aeruginosa, k. Pneumoniae , e.coli

Question 24

Bile esculent test is used to differentiate which 2 organisms

Answer 24

Group D streptococci & Enterococci

Question 25

Oxidase + Organisms

Answer 25

Neisseria, Moraxella, H py, V. Cholera, C. Jejuni, Aeromonas, & L. Pneumophila