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 Microorganism causes serious symptoms in humans Species of microorganism is in question Microorganism cannot be isolated in pure culture Genes from the microorganism cannot be amplified by PCR Microorganism causes serious symptoms in humans Species of microorganism is in question ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type? Streak plate technique Spread plate Pour plate Both (a) and (b) Streak plate technique Spread plate Pour plate Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics The concentration of agar to obtain semi solid media is >10% 1.5-20% >10%but<20% 0.5% or less >10% 1.5-20% >10%but<20% 0.5% or less ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as enriched medium selective medium differential medium enrichment medium enriched medium selective medium differential medium enrichment medium ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics For the selection of endospore-forming bacteria, a mixed culture can be heated at 60°C for 10 minutes 90°C for 10 minutes 80°C for 10 minutes 70°C for 10 minutes 60°C for 10 minutes 90°C for 10 minutes 80°C for 10 minutes 70°C for 10 minutes ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics The solidifying agent commonly used in preparation of media is/are both (a) and (b) agar silica gel none of these both (a) and (b) agar silica gel none of these ANSWER DOWNLOAD EXAMIANS APP
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