Cell Cultures and Characteristics Which of the following problem makes it impossible to satisfy all of Koch's postulates? Species of microorganism is in question Genes from the microorganism cannot be amplified by PCR Microorganism causes serious symptoms in humans Microorganism cannot be isolated in pure culture Species of microorganism is in question Genes from the microorganism cannot be amplified by PCR Microorganism causes serious symptoms in humans Microorganism cannot be isolated in pure culture ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics The concentration of agar to obtain semi solid media is >10%but<20% >10% 1.5-20% 0.5% or less >10%but<20% >10% 1.5-20% 0.5% or less ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics In the pour plate method, the mixed culture is diluted directly in tubes of sterile liquid usually water both (a) and (b) liquid agar medium none of these sterile liquid usually water both (a) and (b) liquid agar medium none of these ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics For the selection of endospore-forming bacteria, a mixed culture can be heated at 80°C for 10 minutes 90°C for 10 minutes 70°C for 10 minutes 60°C for 10 minutes 80°C for 10 minutes 90°C for 10 minutes 70°C for 10 minutes 60°C for 10 minutes ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited. low levels of nitrogen low concentration of various dyes bile salts sugars low levels of nitrogen low concentration of various dyes bile salts sugars ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Agar is used for solidifying culture media because All of these it does not add to the nutritive properties of the medium the melting and solidifying points of agar solution are not the same it does not affect by the growth of bacteria All of these it does not add to the nutritive properties of the medium the melting and solidifying points of agar solution are not the same it does not affect by the growth of bacteria ANSWER DOWNLOAD EXAMIANS APP
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