Which of the following bacteria can grow in acidic pH? Salmonella Vibrio cholerae Lactobacilli Shigella TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following bacteria can grow in alkaline pH? Shigella Lactobacilli Salmonella Vibrio cholerae TRUE ANSWER : ? YOUR ANSWER : ?
Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited. low levels of nitrogen bile salts sugars low concentration of various dyes TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following methods is most likely to be quantitative? None of these Dilution and plating Gram staining Wet mount TRUE ANSWER : ? YOUR ANSWER : ?
In the pour plate method, the mixed culture is diluted directly in tubes of sterile liquid usually water liquid agar medium both (a) and (b) none of these TRUE ANSWER : ? YOUR ANSWER : ?
Important example(s) of enriched medium/media is/ are All of these Bordet-gengou medium Loeffler's serum slope Blood agar TRUE ANSWER : ? YOUR ANSWER : ?
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 selective medium enriched medium enrichment medium differential medium TRUE ANSWER : ? YOUR ANSWER : ?
Pseudomonas aeruginosa forms a blue water soluble pigment called β-carotene chlororaphin pyocyanin pyoverdin TRUE ANSWER : ? YOUR ANSWER : ?
The solidifying agent commonly used in preparation of media is/are silica gel agar both (a) and (b) none of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria? Foul odour Presence of sulphur granules All of these Gas in specimen TRUE ANSWER : ? YOUR ANSWER : ?