P1 MICROBIOLOGY

Question 1

genus of staph aureus

Answer 1

cocci in clusters

Question 2

staph auras gram stain

Answer 2

gram +

Question 3

staph aureus catalase test results

Answer 3

catalase positive

Question 4

staph aureus coagulase test results

Answer 4

coagulase +

Question 5

Identify the test

Answer 5

E test

Question 6

Identify the MIC

Answer 6

the arrow : 0.25
border of zone of inhibition touches the strip

Question 7

the minimum concentration of the antibiotic which inhibits the visible growth of the organism is known as

Answer 7

Minimum inhibitory concentration / MIC

Question 8

Identify the test

Answer 8

kirby- bauer disk diffusion susceptibility test

Question 9

the KB test is done to test

Answer 9

the effectiveness of antibiotics on specific microorganism

Question 10

Identify the test & its importance

Answer 10

DNase test
to determine an organism’s ability to hydrolyze DNA

Question 11

Identify the organism & describe the colony

Answer 11

S. Epidermidis: white,
non-hemolytic colonies

Question 12

Identify the organism & describe the colony

Answer 12

staph aureus
golden Yellow beta haemolytic

Question 13

Identify & describe the shown Microscopic gram stained smear

Answer 13

gram + cocci in cluster of staphylococcus

Question 14

Identify & describe the shown Microscopic gram stained smear

Answer 14

gram + cocci in chains of streptococcus

Question 15

Identify the organism seen in the yellow colonies

Answer 15

staph aureus

Question 16

identify the organism seen in the yellow colonies

Answer 16

Staphylococcus epidermis

Question 17

Identify the agar & its significance

Answer 17

mannitol salt agar
selective medium for recovering S.aureus from faecal specimens, when investigating food poisoning

Question 18

Identify the agar

Answer 18

Nutrient agar

Question 19

Staphylococcal Food Poisoning is commonly due to

Answer 19

SEA
SEC
SEB

Question 20

s aureus can cause toxic shock syndrome by

Answer 20

TSST / toxic shock syndrome toxin

Question 21

which disease is shown

Answer 21

SSSS / staphylococcal scalded skin syndrome
ritter’s disease

Question 22

a case of

Answer 22

Impetigo

Question 23

Identify the shown cutaneous infection

Answer 23

Furuncle / boil

Question 24

this case originates from what cutaneous infection

Answer 24

from folliculitis

Question 25

Identify the shown cutaneous infection

Answer 25

carbuncle

Question 26

this shown cutaneous infection is an aggregation of

Answer 26

furuncle

Question 27

Identify the shown cutaneous infection

Answer 27

sty

Question 28

define a sty

Answer 28

a folliculitis affecting 1 or more hair follicles on the edge of upper/lower eyelid

Question 29

inflammation of hair follicles is known as

Answer 29

Folliculitis

Question 30

mention the 4 modes of transmission of staph aureus

Answer 30

1- person with lesion
2- asymptomatic carrier
3- cross- infection
4- airborne droplets

Question 31

what virulence factor kills WBCs by producing holes in their cell membrane

Answer 31

Leucocidin (Panton- Valentine factor)

Question 32

toxin responsible for SSSS / Ritters disease

Answer 32

Exfoliatin toxin

Question 33

what CONS pathogen causes endocarditis

Answer 33

Staphylococcus epidermidis

Question 34

what CONS pathogen causes UTIs

Answer 34

Staphylococcus saprophyticus

Question 35

Identify the organism in golden yellow pigmented colonies

Answer 35

S . Aureus

Question 36

Identify the organism in lemon yellow pigmented colonies

Answer 36

S. citrus

Question 37

Identify the organism in white pigmented colonies

Answer 37

S . albus