Relevant organisms

Question 1

For an antibiotic to work it must

Answer 1

Enter the bacterial cell

Reach its site of action

Bind to a target that is involved in an essential bacterial function

Significantly impair that function

Question 2

Gram Postive

___ peptidoglycan layer

Answer 2

thick

Question 3

Gram Negative

___ peptidoglycan layer

Answer 3

Thin

Question 4

Outer membrane of gram negative bacteria contains

Answer 4

lipopolysaccharides and porins

Question 5

porins are

Answer 5

small hydrophilic channels that permit diffusion of nutrients and small molecules

Question 6

Periplasmic space

Answer 6

Located between cytoplasmic membrane and outer membrane of Gram negative bacteria

Location of beta-lactamases in Gram-negative bacteria

Question 7

Gram Positive Aerobic Organisms:

Cocci Clusters

Coagulase positive

Answer 7

Staphylococcus aureus

Question 8

Gram Positive Aerobic Organisms:

Cocci Clusters

Coagulase negative

Answer 8

other Staphylococcus species: epidermidis, hominis, haemolyticus, capitus, saprophyticus

Question 9

Gram Positive Aerobic Organisms:

Pairs and Chains

Answer 9

Streptococcus spp.

Enterococcus spp.

Question 10

Gram Positive Aerobic Organisms:

Rods

Answer 10

Listeria

Nocardia

Question 11

Gram Postive Anaerobic

Cocci

Answer 11

peptostreptococcus

Question 12

Gram Postive Anaerobic:

Rods

Answer 12

Clostridium spp. (spore-forming)

Propionibacterium

Actinomyces

Question 13

Gram Negative Aerobic

Bacilli (Rods)

Lactose-fermenting

Answer 13

Enterobacteriaceae family (gut bacteria)

Escherichia coli
Klebsiella pneumoniae
Enterobacter spp.
Proteus mirabilis
Salmonella spp.

Question 14

Gram Negative Aerobic

Bacilli (Rods)

Non-Lactose-fermenting

Answer 14

Pseudomonas aeruginosa

Acinetobacter baumannii

Stenotrophomonas maltophila

Question 15

Gram Negative Aerobic:

Cocci

Answer 15

Neisseria meningitidis

Neisseria gonorrhoeae

Moraxella catarrhalis

Question 16

Gram-negative Anaerobic

Bacilli (rods)

Answer 16

Bacteroides spp.

Prevotella

Fusobacterium

Question 17

Atypical Organisms

Answer 17

Chlamydia spp.
 --C. pneumoniae
 --C. trachomatis
Mycoplasma spp.
 --M. pneumoniae
 --M. genitalium
Legionella spp.
 --L. pneumophilia