What does beta hemolysis look like on blood agar?

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Study for the Ivy Tech Microbiology Lab Test 2. Enhance your skills with multiple choice questions, flashcards, hints, and explanations. Boost your exam readiness now!

Multiple Choice

What does beta hemolysis look like on blood agar?

Explanation:
Beta hemolysis means the bacteria completely lyse the red blood cells around and under the colonies, leaving a clear, colorless zone on blood agar. This full clearing distinguishes it from alpha hemolysis, which causes a greenish tint due to partial hemolysis, and from gamma hemolysis, which shows no change at all. So the description of clear zones with complete lysis best matches beta hemolysis.

Beta hemolysis means the bacteria completely lyse the red blood cells around and under the colonies, leaving a clear, colorless zone on blood agar. This full clearing distinguishes it from alpha hemolysis, which causes a greenish tint due to partial hemolysis, and from gamma hemolysis, which shows no change at all. So the description of clear zones with complete lysis best matches beta hemolysis.

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