Micro - Bacteria

Question 1

most common bacterial STD

Answer 1

Chlamydia

Question 2

polyarticular arthritis

Answer 2

Neisseria gonnorhea

Question 3

Petechial rash all over (3)

Answer 3

Neisseria gonnorhea
Ricketsia
CMV

Question 4

Maltose fermenting Neisseria

Answer 4

MeninGococci

M for maltose and G for glucose

Question 5

MOA of resistance for STD to vaccine

Answer 5

rapid antigenic shifts of pious proteins in N. gonococci

• not seen in N meningococci (have a vaccine)

Question 6

IgA protease (2)

Answer 6

Nesseira (both types)

Streptococcal pneumonia

Question 7

Gullien barre associated (2)

Answer 7

Camplobacter jejuni

URI

Question 8

extracellular elementary bodies made by which organism?

Answer 8

found in Chlamydia trachomatis and

-retiulate bodies intracellular

Question 9

Clue cells

Answer 9

Vagninosis

Gardenella vaginalis

Question 10

Selective growth of a bloody diarrhea causing bug

Answer 10

42 degrees

Camplylobacter jejuni

Oxidase +
gram -
comma shaped

Question 11

Phenylenediamine Test

Answer 11

Oxidase test
Positive
-Campylobacter
-Neisseria
-Helicobacter
-Vibrio

Negative
-enterobacteriaeae

Question 12

McConkey Test

Answer 12

lactose fermentation
Positive
-E coli

Negative

• Salmonella
• Shigella

Question 13

Exotoxin producing that blocks protein synthesis (4)

Answer 13

Blocks E2F
Corynebacterium dipheriae - toxin
Pseudomonas aerugenosa - Exotoxin A

Inactivated 60s ribosome by removing adenine form rRNA
Shigella -Shiga toxin
EHEC - Shiga like toxin

Question 14

Infects prosthetics and IV catheters

• Virulence factor?

Answer 14

Staphylococcus epidermidis

• biofilm production

Catalase +, coag -,
novobiocin sensitive,
nonhemolytic

Question 15

HIV atypical pneumonia

Answer 15

Pneumocystis jiroveccii

Diagnosis- direct fluorescent Ab stain or methenamine silver stain

Question 16

Aged cheese and deli meats association -

• Causal agent?
• worry w/ 2 populations

Answer 16

Listeria monocytogenes

Bad for pregnant women (spontaneous abortion and amnionistis)

meningitis in older immunocompromised
-IV ampicillin/penicillin Rx

everyone else -gastroenteritis - self resolving

Question 17

Catalase (+) (7)

Answer 17

PLACESS for CATs

Psuedomonas
Listeria
Aspergillus
Candida
E coli
Staph aures
Serratia

Question 18

Optochin Test to differentiate between

Answer 18

Streptococcal viridins - Resistant

Streptococcal pneumonia - Sensitive

Question 19

Novobiocin Test to differentiate between

Answer 19

Antibiotic test

Staphylococcus saprophyticus - resistant
Staphylococcus epidermidis - sensitive

Question 20

Thayer martin test

Answer 20

Nesseiria

Question 21

2 organisms that have super antigens -> Shock

Answer 21

Staph aureus (TSST1)

Streptococcus pyrogens - Exotoxin A

Question 22

Protein A

Answer 22

Staph aureus virulence factor that prevents the Fc of IgG to recognize

Question 23

pastries, ham and potato salad, rapid onset - 6 hrs N/V

caused by?

Answer 23

Staph aureus w/ enterotoxin A

Bacillus cereus is also <6 hrs but w/ rice

Question 24

lesion w/ edematous borders and black eschar

Answer 24

cutaneous anthrax - bacillus anthracis

• done by increasing cAMP w/ toxin

boxcar shape gram +