About Microorganisms

Question 1

Gm + vs Gm-

Answer 1

Gm- has outer membrane outside cell wall –> different gram stain colour

Question 2

Staphylococcus VS Streptococcus

Answer 2

Staphylococcus –> catalase producing

Streptococcus –> catalase non-producing

Question 3

S. aureus VS Coagulase-negative Staphylococcus species

Answer 3

S. aureus –> produce coagulase –> clot rabbit plasma

Coagulase-negative Staphylococcus species –> X produce coagulase –> X clot rabbit plasma

Question 4

分類
Group A streptococci, Group B steptococci, Group D streptococci
Beta-haemolytic streptococci, Alpha-haemolytic streptococci
Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus species, Streptococcus viridans, Streptococcus agalatiae, Pneumococcus

Answer 4

Beta-haemolytic streptococci –> 分Group A,B,D
Group A streptococci = Streptococcus pyogenes
Group B steptococci = Streptococcus agalatiae –> more common in children
Group D streptococci (e.g. Enterococcus species)
Alpha-haemolytic streptococci
- Streptococcus viridans –> endocarditis
- Streptococcus pneumoniae = Pneumococcus

Question 5

Normal commensal place of enterococcus

Answer 5

GI tract

Question 6

Classification of anthrax

Answer 6

Aerobic Gram +ve bacilli

Question 7

Classification of Diphtheria

Answer 7

Aerobic Gram +ve bacilli

Question 8

Classification of Listeria monocytogenes

Answer 8

Aerobic Gram +ve bacilli

Question 9

Classification of Clostridium species

Answer 9

Anaerobic Gram positive Rods

Question 10

Classification of Actinomyces species

Answer 10

Anaerobic Gram positive Rods

Question 11

Classification of Neisseria spp

Answer 11

Aerobic Gram -ve cocci

Question 12

Classification of Moraxella spp

Answer 12

Aerobic Gram -ve cocci

Question 13

Classification of Haemophilus influenzae

Answer 13

Aerobic Gram -ve bacilli

Question 14

Classification of Legionella pneumophila

Answer 14

Aerobic Gram -ve bacilli

Question 15

Classification of Enterobacteriaceae

Answer 15

Aerobic Gram -ve bacilli

Question 16

Classification of Bacteroides species

Answer 16

Anaerobic Gram -ve bacteria

Question 17

Classification of Acinetobacter spp.

Answer 17

Aerobic Gram -ve bacilli

Question 18

Classification of Vibrios spp.

Answer 18

Aerobic Gram -ve bacilli

Question 19

Classification of Campylobacter spp.

Answer 19

Aerobic Gram -ve bacilli

Question 20

Classification of Mycobacteria

Answer 20

Aerobic atypical