The document discusses microbiology and the world of microbes. It describes microbiology as the study of microorganisms that can only be seen with a microscope, including viruses, bacteria, protozoa, fungi, and algae. It notes that microbes are omnipresent in all environments and have significant impacts on humans, though most do not cause disease. The document also discusses the human microbiome and our symbiotic relationship with microbes, as well as emerging issues like antibiotic resistance and potential applications of microbes in fields like biotechnology and environmental remediation.

1. World of Microbes
Dr. Dhanya KC
Assistant Professor
Department of Microbiology
St. Mary’s College, Thrissur-
680020
Kerala

3. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

4. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

5. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

6. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

7. Microbiology
Study of microorganisms - forms of life
visible only through a microscope
Types of microorganisms
• Viruses
• Bacteria
• Protozoa
• Fungi
• Algae
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

8. The Microbes
viruses protozoa
bacteria
bacteriophage
algae
spirochaetes
cyanobacteria
fungi
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

9. These are so small. Then why
Microbiology is so important?
Microbes are omnipresent - In all environments
Microorganisms, just like God, cannot be seen through
naked eye but we can feel their impact on us in various
ways.
“Microbes are always at Work”
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

10. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

11. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

12. Deinococcus radiodurans
10 Gy radiation kills A human
This bacteria survives 5000 Gy
Clostridium botulinum
produces a toxin, Botulin
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

13. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

14. Gut microbiome -
Vitamin K and B
synthesis in humans
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

15. The most influential organ in your
body is - brain or heart?
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

16. NO!!!!!!!!
It’s the microbiome
Only 10% of cells in our body is our
own - contain human DNA
The other 90% consists of microbes
– the microbiome
The most influential organ in your
body is - brain or heart?
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

17. 1 to 3 percent of our body weight
are microbesWorld of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

18. Microbial role in carbon, nitrogen cycles
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

19. Bacteria can help clean up oil spills
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

20. Genetic Engineering design recombinant microbes
Produce growth hormone, insulin, Vaccines, etc
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

21. Microbes are used as pesticides and fertilizers
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

22. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

23. Less than 1% of microbes cause disease.
Cause 50% of worldwide deaths per year.
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

24. Drug resistant Infectious Diseases
Increasing number of drug resistant strains
causing diseases
MRSA
(Methicillin Resistant Staphylococcus aureus
MDR-TB
(Multidrug Resistant Tuberculosis)
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

25. •Increasing number of emerging
diseases (H1N1, SARS, AIDS,
hepatitis C, viral encephalitis)
•Other diseases previously not
linked to microorganisms now are
(gastric ulcers, certain cancers,
multiple sclerosis)
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

26. Heliobacter: Causes stomach ulcers
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

27. How to observe and study microbes
• Microscopy
• Culturing in media
• Immunological techniques
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

28. • Compound light Microscope
- 1,000 mag. or less
• Electron Microscope
- > 1,000 X mag.
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

29. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

30. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

31. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

32. In Future..
The 'microbial infallibility’
The human microbiome
Unculturable bacteria - Metagenomics
World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur

33. World of Microbes, Dr. Dhanya KC,
St.Mary's College, Thrissur