Microbiology: An Introduction
Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 7, Problem 8R
Summary Introduction

Introduction:

Disinfectant is a chemical agent which destroys bacteria and hinder its growth. Effective disinfectant should stop bacterial growth even in high dilution levels. When it reduces its effects and allows growth of bacteria, its usage become futile.

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A sample is diluted by a factor of 10 five times. The 10^-3 dilution has 272 colonies on it. Assuming you plated the same volume on each plate, how many colonies would you expect to find on the 10^-2 plate? Include units and use OCD formula.
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Is it safe to use 100g of Lye (NaOH) as a disinfectant at homes? Justify your claim by computing the percent composition. Claim: Yes/No Solution:
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