Evaluation of Antimicrobial Chemical Agents
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We observe increased growth in nutrient agar plates as concentration of chemical agent is decreased.
Liquid water-soluble substances appropriately diluted are dispensed into sterile test tubes, to which are added a measured amount of the test organism and then this is transferred into tubes of sterile media.This method helps in determining .....
whether the inhibitory action is bactericidal
whether the inhibitory action is bacteristatic
decrease in the amount of growth
complete absence of growth
Which of the following is the mode of action of formaldehyde?
interference with glycolysis
shows oxidizing property
combines with vital nitrogen compounds
changes the permeability of cytoplasmic membrane
Iodine kills the microorganisms by causing denaturation of proteins.
Which of the following methods is used for determining the decrease in the amount of growth?
test done on agar medium plate
test done into an agar medium or broth
test done by transfering water-soluble substances to sterile media
by phenol-coefficient method
There are 5 questions to complete.