Cell Cultures and Characteristics Which of the following is used for the proper maintenance and preservation of pure cultures? Preservation by overlaying cultures with mineral oil Periodic transfer to fresh media Preservation by lyophilization All of these Preservation by overlaying cultures with mineral oil Periodic transfer to fresh media Preservation by lyophilization All of these ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics When a substance is added to a solid medium which inhibits the growth of unwanted bacteria but permits the growth of wanted bacteria, it is known as enrichment medium differential medium selective medium enriched medium enrichment medium differential medium selective medium enriched medium ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited. sugars bile salts low levels of nitrogen low concentration of various dyes sugars bile salts low levels of nitrogen low concentration of various dyes ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Mac-Conkey medium is an example of enrichment medium differential medium all of these transport medium enrichment medium differential medium all of these transport medium ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Which of the following methods is most likely to be quantitative? None of these Gram staining Dilution and plating Wet mount None of these Gram staining Dilution and plating Wet mount ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Which of the following problem makes it impossible to satisfy all of Koch's postulates? 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 Microorganism cannot be isolated in pure culture ANSWER DOWNLOAD EXAMIANS APP
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