Gram + cocci

Question 1

Name two major subsects of Gram + bacteria

Answer 1

1. Staphylococcus

2. Streptococcus

Question 2

How do you differentiate between staphylococcus and streptococcus?

Answer 2

Do the catalase test

1. Catalase +
   - Staph aureus
2. Catalase -
   - Streptococcus

Question 3

How do you differentiate between different types of Staphyloccus?

Answer 3

‘Coagulase test’

1. Coagulase +
   - Staphyloccocus Aureus
2. Coagulase -
   - Staphyloccocus Epidermitis

Question 4

What kind of infections does Staph aureus cause?

Answer 4

1. Skin infections
2. Pneumonia
3. Endocarditis

Question 5

How do you differentiate between different types of Streptococcus?

Answer 5

Judge the level of lysis of the blood

1. Alpha haemolysis - partially lyse RBC
2. Beta haemolysis - completely lyse RBC
3. No haemolysis

Question 6

Name two examples of alpha haemolytic streptococcus

Answer 6

(partially lyse the blood)

1. Strep pneumoniae
2. Strep viridans

Question 7

Name 2 examples of Beta haemolytic strep

Answer 7

(complete lysis of RBC)

1. Group A strep (Pyogenes)
2. Group B strep (agalactiae)

Question 8

Name 2 examples of non haemolytic streptoccus

Answer 8

1. Group D strep ( Bovis )

2. Enterococcus

Question 9

Name 3 examples of infections caused by Strep pneumoniae?

Answer 9

1. Pneumoniae
2. Meningitis
3. URTI

Question 10

Name 1 example of disease caused by Strep viridans?

Answer 10

Bacterial endocarditis

Question 11

Name 2 exaples of disease caused by Group A strep

Answer 11

1. Rheumatic fever
2. Scarlet fever
3. Necrotising fascitis

Question 12

Enterococcus bacteria is an example of?

Answer 12

Non haemolytic streptoccus

Question 13

Group A strep is an example of?

Answer 13

Beta haemolytic streptoccus

Question 14

Strep pneumoniae is an example of?

Answer 14

Alpha haemolytic streptoccus