Beta hemolysis
A) is best detected on a sheep's blood medium.
B) is caused by hemolysis of blood cells.
C) refers to a clear zone around bacterial colonies growing on a sheep's blood medium.
D) All of the above

Question

Quizplus · Accepted Answer

A swab of the throat is streaked on a sheep's blood agar plate, after which a differentiation disk is placed on the most heavily streaked first quadrant. Complete clearing of the agar around the colonies indicates beta hemolysis, which results because of a toxin produced by the organism that lyses the sheep red blood cells in the agar.

Beta Hemolysis