click below
click below
Normal Size Small Size show me how
Bacterial Tests
Question | Answer |
---|---|
starch hydrolysis pos result and neg result | pos = colorless zone after iodine neg= red brown everywhere after iodine |
sugar fermentation pos result and neg result | pos= bubbles and phenol red turns yellow neg= no bubbles and phenol red stays red |
indole production pos and neg result | pos=red magenta ring neg=any other color ring |
methyl red pos and neg result | pos= red neg= yellow |
gelatin hydrolysis | pos= liqiid after ice bath neg= solid after ice bath |
citrate utilization | pos= growth and blue neg= green |
catalase production | pos= bubbles neg= no bubbles |
coagulase | pos= solid or loose clot neg= fluid |
hydrogen sulfide production | pos= black precipitate neg= no black precipitate |