Laboratory Experiments in Microbiology (11th Edition)
Laboratory Experiments in Microbiology (11th Edition)
11th Edition
ISBN: 9780321994936
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
bartleby

Concept explainers

Question
Book Icon
Chapter 46, Problem 1Q
Summary Introduction

To fill:

Differential

Introduction:

Selective media:

The media that inhibits the growth of a bacterium at the same time aiding the growth of other bacterium through particular composition is termed as selective media.

Eg: Mac Conkey agar is a selective media for Gram negative bacterium.

Differential Media:

This media comprises of certain biochemical that differentiate visually the ability and inability of bacterium for undergoing specific biochemical process is termed as differential media.

Eg: Blood agar

Expert Solution & Answer
Check Mark

Answer to Problem 1Q

Is blood agar selective or differential? Differential

Explanation of Solution

Blood agar is composed of defibrinated sheep blood, sodium chloride and nutrient agar. Based on the ability of the innoculated bacterium, to hemolyse the blood agar i.e. destruction of red blood cells and the kind of hemolysis occurred helps in identifying the bacterium. The three types of hemolysis are as follows,

  1. Alpha-hemolysis- Only partial damage of the red blood cells happens. −Normal Streptococci
  2. Beta-hemolysis-Complete hemolysis- Pathogenic Streptococci
  3. Gamma hemolysis- No hemolysis.-Normal Streptococci

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
What are biofertilizers and mention the significance
PCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen.     How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans?   Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.
Other than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?
Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
An Illustrated Guide To Vet Med Term
Biology
ISBN:9781305465763
Author:ROMICH
Publisher:Cengage
Text book image
Curren'S Math For Meds: Dosages & Sol
Nursing
ISBN:9781305143531
Author:CURREN
Publisher:Cengage
Text book image
Principles Of Pharmacology Med Assist
Biology
ISBN:9781337512442
Author:RICE
Publisher:Cengage
Text book image
Basic Clinical Laboratory Techniques 6E
Biology
ISBN:9781133893943
Author:ESTRIDGE
Publisher:Cengage
Text book image
Case Studies In Health Information Management
Biology
ISBN:9781337676908
Author:SCHNERING
Publisher:Cengage
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning