Question

Hemolysis with no zone of hemolysis caused by the absence of RBC lysis is called:

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

Answer 1

Gamma-hemolysis is the term used to describe hemolysis with no zone of hemolysis caused by the absence of RBC lysis.

Step-by-step explanation:

Hemolysis with no zone of hemolysis caused by the absence of RBC lysis is called gamma-hemolysis (c). This is characterized by colonies that are non-hemolytic, and the red blood cell membrane is not ruptured, but rather the hemoglobin is reduced to methemoglobin, resulting in a green color surrounding the colonies growing on the Blood Agar Plate (BAP).