Transcript History in Microbiology

Humans and the Microbial
World
Chapter 1
What is a Microorganism?
1. Definition
2. Prokaryotic or Eukaryotic?
3. Unicellular or Multicellular?
What is a Microorganism?
1. Prokaryotic Microbes
Bacteria
Archaea
2. Eukaryotic microbes
Fungi, Algae and Protozoa
3. Viruses????
Microbes and diseases
•
•
Infectious diseases of humans, animals
and plants.
Food Spoilage
• Can -> food poisoning
Microbes and Human diseases
•
Pathogenicity of a microbe
Vs.
Resistance of the host
•
Etiological agent
Microbes and Human diseases
1. Biological warfare:
Bacillus anthracis, Clostridium botulinum
2. Bacterial resistance to antibiotics.
-very big concern in modern world
3. Emerging Infectious diseases
Ability to infect different Host species
ex. Avian flu
Microbes and Human life
1.
Recycling of chemical elements:
N2 fixation
2.
Decomposition of organic
matter: sewage treatment
3.
Bioremediation: Pseudomonas
and Bacillus
Bioremediation
Microbes and Human life
4. Insect pest control:
Bacillus thuringensis (insecticide)
5. Food industry: vinegar, wine, beer,
cheese, yogurt, bread, pickles
Microbes and Human life
6. Genetic Engineering: production of
proteins, vaccines, enzymes, growth
hormones etc. eg. Insulin
7. Gene therapy: use of viruses to carry
replacement for defective gene
8. Genomics
How to properly write scientific
name of a microorganism
Bacillus anthracis
Bacillus anthracis: continuous = wrong
B. anthracis