Lab Quiz 7

Question 1

Which of the following hemolytic activities would be the most pathogenic to humans?

a) Delta-hemolysis
b) Gamma-hemolysis
c) Alpha-hemolysis
d) Beta-hemolysis

Answer 1

d) Beta-hemolysis

Question 2

Which of the following hemolytic activity described partial clearing of red blood cells on blood agar?

a) Beta-hemolysis
b) Alpha-hemolysis
c) Gamma-hemolysis
d) Delta-hemolysis

Answer 2

b) Alpha-hemolysis

Question 3

“Following a stab inoculation into agar, uniform growth throughout the solid medium indicates the presence of a motile species”

a) True
b) False

Answer 3

a) True

Question 4

The Snyder test determines:

a) Whether a specimen contains bacteria that are more likely to cause dental caries
b) Whether a specimen contains motile bacteria
c) Whether specimen contains bacteria that can break down red blood cells
d) Whether specimen contains bacteria that produce coagulase enzyme

Answer 4

a) Whether a specimen contains bacteria that are more likely to cause dental caries

Question 5

Bacitracin’s mechanism of action is interring with cell wall synthesis.

a) True
b) False

Answer 5

a) True