Classification of Bacteria (Lecture 1)

Question 1

Bacterial morphology

Name for sphere-shaped bacteria

Answer 1

coccus/cocci

Question 2

Bacterial morphology

Name for cocci in pairs

Answer 2

diplococci

Question 3

Bacterial morphology

Name for elongated bacteria

Answer 3

rod / rods

Question 4

Bacterial morphology

Another name for rod-shaped bacteria -

Can be confusing because it is also the name of a species of bacteria

Answer 4

bacillus

Question 5

Gram stain and morphology

Staphlococcus

Answer 5

Gram positive cocci in clusters

Question 6

Gram stain and morphology

Streptococcus
Enterococcus

Answer 6

Gram positive cocci in pairs or short chains

Question 7

Gram stain and morphology

E. coli
Psueudomonas
Enterobacter
Shigella
Salmonella

Answer 7

Gram negative rods

Question 8

Gram stain and morphology

Neisseria
Moraxella

Answer 8

Gram negative cocci

Question 9

Gram stain and morphology

Clostridium
Actinomyces
Bacteroides

Answer 9

Anaerobes

not usually referred to by gram staining or morphology

Question 10

Gram stain and morphology

Listeria

Answer 10

Gram positive coccobacilli (morphology between rods and cones)

Question 11

Gram stain and morphology

Haemophilus – CAP
Legionella – CAP
Bordetella – pertussis

Answer 11

Gram negative coccobacilli (morphology between rods and cones)

Question 12

Gram stain and morphology

Acinetobacter

“particularly nasty”
ventilator associated pneumonia

Answer 12

Gram variable coccobacilli (morphology between rods and cones)

Question 13

Coagulase test

used mostly to differentiate which bacteria?

Answer 13

STAPHlococcus

Question 14

Coagulase test

Examples of coagulase POSITIVE bacteria

(2 examples)

Answer 14

Staph aureus

some Staph intermedius

Question 15

Coagulase test

Examples of coagulase NEGATIVE bacteria

(most species other than ________)

Answer 15

Most Staph species OTHER THAN S. aureus

Question 16

Coagulase test

coag positive or negative more likely to be pathogenic?

Answer 16

Coag positive is more likely to be pathogenic

Coag negative often a contaminant, non-pathogenic

Question 17

Hemolysis test

used mostly to differentiate which bacteria?

Answer 17

STREP tococcal bacteria

Question 18

Hemolysis test

Alpha hemolytic example of bacteria (1)

Answer 18

S. pneumoniae

Question 19

Hemolysis test

Beta hemolytic example of bacteria (1)

Answer 19

Strep pyogenes

Question 20

Hemolysis test

Gamma hemolytic examples of bacteria

Answer 20

Strep bovis

Entire genus - Enterococcus

Question 21

Atypicals

inexact term for bacteria that are unusual in some way

Answer 21

Mycoplasma - cell structure

Chlamydia - cell structure, life-cycle

Rickettsia

Legionella - atypical pneumonia

Question 22

Bacterial shorthand

“pneumococcus” =

Answer 22

Streptococcus pneumoniae

Question 23

Bacterial shorthand

“H. flu” =

Answer 23

Haemophilus influenzae

Question 24

Bacterial shorthand

“Enterics” =

Answer 24

Enterobateriaceae

E. Coli, K. pneumoniae, P. mirabilis

Question 25

Bacterial shorthand "anaerobes" = definition, not examples

Answer 25

any and all anaerobic species

Question 26

Bacterial shorthand "ESBL" =

Answer 26

extended-spectrum beta-lactamase producing member of the Enterobacteriaceae family