PTS - Introduction to Microbiology Formative

Question 1

What colour do gram positive bacteria stain?

A) RED
B) BLUE
C) PINK
D) PURPLE

Answer 1

D) PURPLE

Question 2

Which of these tests differentiate the types of Streptococci?

A) Haemolysis
B) Catalase
C) Coagulase
D) Oxidase

Answer 2

A) Haemolysis

Question 3

Staphaureus gives a positive result with the coagulase test.

A) True
B) False

Answer 3

A) True

Question 4

Which of the following describes Shigella?

A) Gram positive bacilli, non-lactose fermenting
B) Gram negative bacilli, lactose fermenting
C) Gram negative cocci, positive oxidase test
D) Non-lactose fermenting, negative oxidase test

Answer 4

D) Non-lactose fermenting, negative oxidase test

Question 5

Which of these is an example of group A streptococci?

A) Strep pneumonia
B) Strep pyogenes
C) Strep Viridans
D) Strep agalactiae

Answer 5

B) Strep pyogenes

Question 6

Which class of antibiotic does not inhibit cell wall synthesis?

A) Glycopeptides
B) Cephalosporins
C) Macrolides
D) Penicllins

Answer 6

C) Macrolides

Question 7

Which antibiotic should you use to treat MRSA?

A) Vancomycin
B) Benzylpenicllin
C) Clarithromycin
D) Cephalexin

Answer 7

A) Vancomycin

Question 8

Which stain is used for mycobacteria?

A) Lowenstein - Jensen
B) Methylene blue
C) Oxidase purple
D) Ziehl-Neelsen

Answer 8

D) Ziehl-Neelsen

Question 9

Which of these is the most appropriate way of detecting viruses?

A) Light microscopy
B) Culturing
C) PCR
D) API strip

Answer 9

C) PCR