Q. Which of the following bacteria requires nicotinic acid as a growth factor in their media? Nitrosomonas sp coli Proteus vulgaris none of the above Answer: Proteus vulgaris
Q. Which of the following are functions of Maintenance Media? used for the maintenance of the viability and physiological characteristics used for determining the type of growth produced by bacteria used for assay of vitamins,amino acids used for determining the bacterial content Answer: used for the maintenance of the viability and physiological characteristics
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Q. Which of the following is a Complex media for fungal growth? Potato Dextrose Agar(PDA) media Mac Conkey Agar media Nutrient broth Luria-Bertani media Answer: Potato Dextrose Agar(PDA) media
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Q. Nutrient broth, a liquid media contains beef extract and peptone respectively in how much amounts? 0.3%, 0.5% 0.7%, 0.3% 0.2%, 0.4% 0.1%, 0.6% Answer: 0.3%, 0.5%
Q. Which of the following is a rich source of B vitamins? Yeast extract Beef extract Peptone Agar Answer: Yeast extract
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Q. Which of the following is a characteristic of beef extract? aqueous extract of lean beef tissue aqueous extract of yeast cells complex carbohydrate obtained from certain marine algae product resulting from the digestion of proteinaceous materials Answer: aqueous extract of lean beef tissue
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Q. What is the temperature of liquid nitrogen? 196 degree C 150 degree C 0 degree C None Of The Above Answer: -196 degree C
Q. Which of the following are not performed in lyophilization? bacterial sample is dehydrated cell suspension is frozen at -60 degree to -78 degree C vials are connected to high-vacuum line agar slant is covered with mineral oil Answer: agar slant is covered with mineral oil
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Q. Which of the following method can be used to determine the number of bacteria quantitatively? Pour-plate and spread plate Streak-plate Spread-plate Pour plate Answer: Pour-plate and spread plate
Q. In pour-plate method,the medium should be maintained at what temperature? 67 degree C 37 degree C 0 degree C 45 degree C Answer: 45 degree C
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