The antibiotic that differentiates between group A & B beta hemoloytic streptoco

Question

The antibiotic that differentiates between group A & B beta hemoloytic streptococci is. a. Novobiocin b. Bacitracin c. SXT d. Optochin c. All of the above The antibiotic that differentiates between the species of straphylococci is. a. Novobiocin b. Bacitracin c. SXT d. Optochin e. All of the above The antibiotic that differentiates groups A & B from other beta hemoloytic Streptococci is. a. Novobiocin b. Bacitracin c. STX d. Optochin e. c & d only The antibiotic that differentiates between Streptococcus pneumoniae and other alpha hemololic streptococci is. a. Novobiocin b. Bacitracin c. STX d. Optochin e. a &c; only Beta hemolytic staphylococcus occurs when a. The red blood cells in the medium are partially lysed b. The red blood cells in the medium arc all intact c. The red blood cells in the medium arc completely lysed d. The red blood cells in the medium are become green (viridians) e. All of the above

Explanation / Answer

31. b. Bacitracin

Explanation: Group A beta-hemolytic Streptococcus pyogenes is sensitive to bacitracin and will not grow when this antibiotic is present in the medium.

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