Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 6, Problem 2Q
Why were you instructed to discard the toothpick in disinfectant?
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Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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- Why would hydrogen peroxide be an effective disinfectant?arrow_forwardA food sample with an unknown number of contaminating bacteria was serially diluted to 10-6. A volume of 0.1 mL (100 μL) of the dilutions was plated. The 10-6 plate contained 96 colonies. What was the original microbial concentration?arrow_forwardWhat concentration of ethanol is considered optimum for disinfectant? Why not 100%?arrow_forward
- What is the difference of washing from hand disinfection?arrow_forwardTRUE OR FALSE Coconut oil will give (positive) result to Molisch test.arrow_forwardWhat is the minimal concentration (MIC) for disinfectant number 1? Just write the corresponding number including the decimal as written. ug/mL. Disinfectant 1 2 3 4 concentration 0.1 ug/mL +++ ++++ ++ +++ 0.2 ug/mL ++ ++ + ++ 0.5 ug/mL + + 1.0 ug/mL 5.0 ug/mL subculture 1 2 3 4 0.1 ug/mL ++++ ++++ ++++ ++++ 0.2 ug/mL ++++ ++++ ++++ ++++ 0.5 ug/mL ++++ ++++ ++++ 1.0 ug/mL ++++ 5.0 ug/mL Submit responsearrow_forward
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