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 cannot be isolated in pure culture Microorganism causes serious symptoms in humans Species of microorganism is in question Genes from the microorganism cannot be amplified by PCR Microorganism cannot be isolated in pure culture Microorganism causes serious symptoms in humans ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited. bile salts low levels of nitrogen sugars low concentration of various dyes bile salts low levels of nitrogen sugars low concentration of various dyes 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 Pour plate Spread plate Both (a) and (b) Streak plate technique Pour plate Spread plate Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics Pseudomonas aeruginosa forms a blue water soluble pigment called β-carotene pyocyanin pyoverdin chlororaphin β-carotene pyocyanin pyoverdin chlororaphin ANSWER DOWNLOAD EXAMIANS APP
Cell Cultures and Characteristics A medium containing crystal violet dye plus sodium deoxycholate will allow gram (+)ve intestinal bacteria to grow gram (-)ve intestinal bacteria to grow aquatic bacteria to grow none of these gram (+)ve intestinal bacteria to grow gram (-)ve intestinal bacteria to grow aquatic bacteria to grow none of these 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 selective medium differential medium enrichment medium enriched medium selective medium differential medium enrichment medium enriched medium ANSWER DOWNLOAD EXAMIANS APP
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