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... we tried to organize the experiment the best we could. In procedure 1 we did not cut off the agar in a smooth shape which gave us a hard time measuring. Incorrect measurements of agar blocks have affected the results. Also we could've miscalculated the time of agar blocks in the solution. In addition, unfortunately we didn't read the lab properly that's why we made ... ...
... ;composed of hyaluronic acid and are beta-hemolytic, which is true for streptococcus pyogenes"(Todar). "Beta-hemolytic streptococci produce a toxin that forms a clear zone of hemolysis on blood agar, demonstrating its ability to destroy red blood cells" (Charlotte). This hemolysis contribute the the toxins formed by Group A streptococci called streptolysins. "Streptolysins can destroy not only red blood ... ...
... growth has been inhibited. The size of this zone of inhibition depends on the sensitivity of the bacteria to the specific antibiotic and the antibiotic's ability to diffuse through the agar. After 18 hours of incubation at 35oC, the clear zones are measured. In order to determine if an antibiotic will be effective in treating the bacterial infection, the zone of ... ...
