Characteristics of each bacteria genus

Question 1

Staphylococcus spp.

Answer 1

G+, aerobic, cocci in clusters

Question 2

Streptococcus spp.

Answer 2

G+, aerobic, cocci in chains

Question 3

Corynebacterium spp.

Answer 3

G+, aerobic, non-branching rods

Question 4

Listeria spp.

Answer 4

G+, aerobic, single or short chain non-branching rods

Question 5

Peptostreptococcus spp.

Answer 5

G+, anaerobic cocci, non-spore forming

Question 6

Actinomyces spp.

Answer 6

G+, anaerobic branching filmentous bacilli

Question 7

Clostridium spp.

Answer 7

G+, anaerobic rods, forms spores (strict anaerobes)

Question 8

Enterobacteriaceae

Answer 8

G-, aerobic fermenters, rods

Question 9

Vibrio spp.

Answer 9

G-, aerobic fermenter, rods

Question 10

Moraxella spp.

Answer 10

G-, aerobic nonfermenter, diplococci

Question 11

Pseudomonas spp.

Answer 11

G-, aerobic nonfermenter, slender rods

Question 12

Haemophilus spp.

Answer 12

G-, coccibacilli or short rods, fastidious

Question 13

Neisseria spp.

Answer 13

G- diplococci, fastidious

Question 14

Bacteroides spp.

Answer 14

G-, anaerobic, rods

Question 15

Helicobacter spp.

Answer 15

G-, spiral, **hard to culture

Question 16

Treponema spp.

Answer 16

Cannot Gram stain, spirochete **hard to culture

Question 17

Mycobacterium spp.

Answer 17

Aerobic, Non-spore forming, non-motile, mycolic acid outer membrane, slow growing, fastidious
**hard to grow

Question 18

Mycoplasma spp.

Answer 18

No cell wall (resistant to beta-lactams)

**hard to grow

Question 19

Chlamydia/Chlamydophila spp.

Answer 19

must be cultivated in living cells

**hard to grow

Question 20

Rickettsia spp.

Answer 20

G-, grows inside living cells

**hard to grow