Answered

A viral infection was identified in a 17-year-old patient complaining of a severe sore throat. How did the viral growth appear on a Blood Agar plate?

A. Beta hemolytic
B. Alpha hemolytic
C. Gamma hemolytic
D. It would not grow on a Blood Agar Plate



Answer :

GinnyAnswer

Final answer:

Beta-hemolytic growth on a Blood Agar Plate appears as tiny clear colonies surrounding a clear zone, indicating complete lysis of red blood cells.


Explanation:

Beta-hemolytic growth on a Blood Agar Plate will appear as tiny clear colonies surrounded by a clear zone, indicating complete lysis of red blood cells. This pattern is characteristic of organisms like Streptococcus pyogenes.


Learn more about Blood Agar Plate Hemolysis Patterns here:

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ktreyb

Answer:

Option D, it would not grow on a blood agar plate


Explanation:

A blood agar plate is a Petri dish filled with a nutrient-rich medium composed with sheep blood that allows for ample bacterial growth, allowing for the bacteria to be cultured and an antibiotic sensitivity to be determined.


Because the patient is currently living with a viral infection, collecting a specimen and trying to grow it in a blood agar plate will not produce results. Viruses and bacteria are two different types of pathogens. Even if virus did grow within the plate, antibiotics would prove to be ineffective when introduced to the plate because they only work in treating infections caused by bacteria.


Viral growth would not occur on a blood agar plate, option D.

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