Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 20, Problem 4CT
Why is turbidity not an accurate measurement of viable bacteria in a culture?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What is the advantage of the plating method over an electronic cell counting method in counting cells?
Why does turbidity lose reliability at high cell concentrations when the culture reaches the stationary phase?
Why does saliva not serve as a good microbialgrowth medium?
Why does turbidity in a cultured media losses its reliability at high cell concentrations?
Chapter 20 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Additional Science Textbook Solutions
Find more solutions based on key concepts
Why is it necessary to be in a pressurized cabin when flying at 30,000 feet?
Anatomy & Physiology
1. ___ Mitosis 2. ___ Meiosis 3. __ Homologous chromosomes 4. __ Crossing over 5. __ Cytokinesis A. Cytoplasmic...
Microbiology with Diseases by Body System (5th Edition)
In humans, hemophilia A (OMIM 306700) is an X-linked recessive disorder that affects the gene for factor VIII p...
Genetic Analysis: An Integrated Approach (2nd Edition)
Fibrous connective tissue consists of ground substance and fibers that provide strength, support, and flexibili...
Human Biology: Concepts and Current Issues
3. CAUTION Why is genetic drift aptly named?
a. It causes allele frequencies to drift up or down randomly.
b. I...
Biological Science
Use the key to classify each of the following described tissue types into one of the four major tissue categori...
Anatomy & Physiology (6th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Why does motility media contain a lower amount of agar than ordinary agar?arrow_forwardA broth culture is initially inoculated with a single bacterial cell. For the first hour the bacteria has a generation time of 30 minutes, for the second hour the generation time has been reduced to 15 minutes, and for the third hour the generation time has been reduced to 10 minutes. At the end of the third hour how many bacteria are present in the broth culture?arrow_forwardOf what practical importance are air borne microorganisms to the laboratory workers? What precautions should be taken to control laboratory contaminants? Why are petri dishes incubated in an inverted position? Of what advantage is the using a solid and a liquid medium?arrow_forward
- Is the mannitol salt agar (MSA) a complex or defined medium? Explain based on Composition. What kind of media based on what kind of microorganisms it allows to growarrow_forwardwhy is it important that a small amount of inoculum be used in preparation of an agar slant?arrow_forwardWhat is the difference between a mixed culture and a contaminated culture if they both contain more than one type of organism ?arrow_forward
- Agar is a complex polysaccharide obtained from seaweed and cannot be digested by most microorganisms. Why does this property make agar an excellent solidifying agent for microbiological media?arrow_forwardThe optimum growth pH for a microorganism is usually: 4,5,7 or 8arrow_forwardWhich has a greater impact on the survival of an organism, temperatures above its maximum temperature or temperatures below its minimum temperature? Explain why and how this relates to typical methods used to control microbial growth.arrow_forward
- Spores and toxin-producing microorganism produce toxins need higher Aw than minimum Aw for microbial growth. How could food industry benefit from this fact?arrow_forwardWhy is agar ideal for microbial cultivation?arrow_forwardIs the Tryptoc Soy Agar (TSA) a complex defined medium? Explaining based on its composition? Is TSA a differential, selective, both differential and selective media? Please help by explaining based on what kind of MicroOrganisms it allows to grow?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license