1. Introduction to microbial and infectious diseases
Course Code: NUR 240
Dr. Samah Mohammed

2. Microbial World And You
Out lines
Define microbiology?
Define infectious disease?
Define communicable disease?
Discuss types of microorganism?
Microbial World And You

3. What is Microbiology? Microbiology is the study of microorganisms.
Micro: too small to be seen with the naked eye (cannot seen by naked eye).
Bio : life
ology : study of.
What are Microorganisms?
Also called as Microbes are minute living things that individually are usually too small to be seen with the unaided eye.
An organism that can be seen only with the aid of a microscope.

4. Microorganisms - what comes to mind?
Microorganisms are found everywhere in the world, in all living things, plants and animal, on and inside your body, than there are cells that make up your entire body.
Microorganisms can live in the air, on land, and in fresh or salt water environments.
Some of them are pathogens, can be harmful and causes diseases, but majority of microorganisms beneficial for us.

5. What are groups of Microorganisms?
Bacteria
Protozoan's
Algae
Parasites
Fungi
Viruses
Bacteriology
Protozoology
Phycology
Parasitology
Mycology
Virology

8. Types of Microorganisms
Bacteria: are unicellular organisms. Because they have no nucleus, the cells are described as prokaryotic.
2. Fungi: (mushroom, and yeasts) with a true nucleus. Most fungi are multicellular. Fungi obtain nutrients by absorbing organic material from their environment.

9. Types of Microorganisms
3. Protozoa: are unicellular. Protozoa obtain nourishment by absorption or ingestion through specialized structures.
4. Algae: are unicellular or multicellular that obtain nourishment by photosynthesis.
6. Viruses: are non cellular entities that are parasites of cells. Viruses consist of a nucleic acid core (DNA or RNA) surrounded by a protein coat

10. Infectious disease Definition:
1. Infectious disease: any infection caused by microbes or parasites.
2. Communicable disease: infection transmitted from persons or animals to other persons.

11. Goal of studying infectious disease
- To study etiology, epidemiology, pathogenesis, clinical manifestations, treatment and prevention of infectious diseases. - To control and eliminate these diseases. (occurrence, spreading, prevention)

12. Any Question

13. Answer the following questions
What is Microbiology?
What are Microorganisms?
Enumerate types of Microorganisms?
Fill the missing spaces :-
1-Science deal with the study of Bacteria is called------,Virus is called ,with the Fungus and with Algae is called
2- Bacteria are organisms. Because they have , the cells are described as prokaryotic.
3-True cells include…………………….