Solved by a verified expert:You streak an unknown sample and after incubation you see some red colonies and some yellow. What can you interpret from this experiment? Select one:a. Likely started with a pure cultureb. A spread plate would work betterc. You have identified Enterobacter aerogenesd. You have identified Serratia marcescense. Likely started with a mixed cultureQuestion 22Not yet answered Marked out of 1.0 Flag questionQuestion textWhy is the glass rod in the spread plate method put in alcohol and ignited instead of sterilized like a flame loop? Select one:a. Glass oxidizesb. Glass meltsc. Glass takes longer to coold. Glass burnse. Glass is more sterileQuestion 23Not yet answered Marked out of 1.0 Flag questionQuestion textWhat would likely occur if the flame loop was not sterilized between streaks on the quadrant streak method? Select one:a. Bacteria will not stick to the loopb. Virus will be introducedc. Flame loop will be too hotd. The sample will be contaminatede. Subsequent streaks would have more coloniesQuestion 24Not yet answered Marked out of 1.0 Flag questionQuestion textTrue or false: Most colonies can been seen without aid (naked eye), and most single cells cannot be seen without a microscope. Select one:TrueFalse
Expert answer:Highland BS203 – You streak an unknown sample
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