Cell Cultures and Characteristics Which of the following problem makes it impossible to satisfy all of Koch's postulates? Microorganism cannot be isolated in pure culture Genes from the microorganism cannot be amplified by PCR Species of microorganism is in question Microorganism causes serious symptoms in humans Microorganism cannot be isolated in pure culture Genes from the microorganism cannot be amplified by PCR Species of microorganism is in question Microorganism causes serious symptoms in humans ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Plate counts are often reported as Both (a) and (b) cfu/ml cfu thousands/ml Both (a) and (b) cfu/ml cfu thousands/ml ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at -60 to -78°C -48 to -58°C -20 to -30°C -30 to -48°C -60 to -78°C -48 to -58°C -20 to -30°C -30 to -48°C ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate gram positive bacteria acid fast organisms coliform bacteria yeasts gram positive bacteria acid fast organisms coliform bacteria yeasts ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics The concentration of agar to obtain semi solid media is 1.5-20% >10%but<20% >10% 0.5% or less 1.5-20% >10%but<20% >10% 0.5% or less ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics For the selection of endospore-forming bacteria, a mixed culture can be heated at 90°C for 10 minutes 70°C for 10 minutes 80°C for 10 minutes 60°C for 10 minutes 90°C for 10 minutes 70°C for 10 minutes 80°C for 10 minutes 60°C for 10 minutes ANSWER DOWNLOAD EXAMIANS APP
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