The concentration of agar to obtain semi solid media is >10% 0.5% or less >10%but<20% 1.5-20% TRUE ANSWER : ? YOUR ANSWER : ?
Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited. low concentration of various dyes low levels of nitrogen bile salts sugars TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is used for the proper maintenance and preservation of pure cultures? Preservation by overlaying cultures with mineral oil Preservation by lyophilization Periodic transfer to fresh media All of these TRUE ANSWER : ? YOUR ANSWER : ?
Stuart's transport medium is used for transport of specimen containing Vibrio cholerae Shigella Neisseria gonorrhoeae Salmonella TRUE ANSWER : ? YOUR ANSWER : ?
A disease producing species occurring in a mixed culture can often be selected on the basis of its pathogenic properties none of these special carbon source special nitrogen source TRUE ANSWER : ? YOUR ANSWER : ?
For the selection of endospore-forming bacteria, a mixed culture can be heated at 80°C for 10 minutes 60°C for 10 minutes 70°C for 10 minutes 90°C for 10 minutes TRUE ANSWER : ? YOUR ANSWER : ?
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 enriched medium enrichment medium 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 differential medium selective medium enriched medium enrichment medium TRUE ANSWER : ? YOUR ANSWER : ?
Important example(s) of enriched medium/media is/ are Blood agar All of these Loeffler's serum slope Bordet-gengou medium TRUE ANSWER : ? YOUR ANSWER : ?
Viable plate count can be obtained using Hemocytometer both (a) and (b) Spread plate method Pour plate method TRUE ANSWER : ? YOUR ANSWER : ?