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Medical Microbiology

Medical Microbiology. Lecture 1 Dr. Dalia M. Mohsen Associate prof . of Microbiology. Lecture 1 Microbial World And You. 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

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Medical Microbiology

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  1. Medical Microbiology Lecture 1 Dr. Dalia M. Mohsen Associate prof. of Microbiology

  2. Lecture 1Microbial World And You Dr. Dalia Mohsen Associate professor of microbiology.

  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. Dr. Dalia Mohsen Associate professor of microbiology.

  4. Characteristics of cell Maintain structure by taking up chemicals and energy from the environment Respond to stimuli in the external environment Reproduce and pass on their organization to their offspring Evolve and adapt to the environment Dr. Dalia Mohsen Associate professor of microbiology.

  5. Study of various groups of Microorganisms 1. Bacteria 2. Protozoans 3. Algae 4. Parasites 5. Yeasts and Molds (Fungi) 6. Viruses Bacteriology Protozoology Phycology Parasitology Mycology Virology Dr. Dalia Mohsen Associate professor of microbiology.

  6. Microorganisms - what comes to mind? Diseases Infections Epidemics Food Spoilage Only 1% of all known bacteria cause human diseases About 4% of all known bacteria cause plant diseases 95% of known bacteria are non-pathogens Dr. Dalia Mohsen Associate professor of microbiology.

  7. 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. Dr. Dalia Mohsen Associate professor of microbiology.

  8. Dr. Dalia Mohsen Associate professor of microbiology.

  9. Types of Microorganisms • Bacteria are unicellular organisms. Because they have no nucleus, the cells are described as prokaryotic. • Archaea (Archae Bacteria) have prokaryotic cells; lack peptidoglycan in their cell walls. Archaea include methanogens, halophiles, and extreme thermophiles. extreme thermophiles Dr. Dalia Mohsen Associate professor of microbiology.

  10. 3. Fungi (mushroom, molds, and yeasts) have eukaryotic cells (with a true nucleus). Most fungi are multicellular. Fungi obtain nutrients by absorbing organic material from their environment. 4. Protozoa are unicellular eukaryotes. Protozoa obtain nourishment by absorption or ingestion through specialized structures. Dr. Dalia Mohsen Associate professor of microbiology.

  11. 5. Algae are unicellular or multicellular eukaryotes that obtain nourishment by photosynthesis. Algae produce oxygen and carbohydrates used by other organisms. 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 Dr. Dalia Mohsen Associate professor of microbiology.

  12. Qustions Dr. Dalia Mohsen Associate professor of microbiology.

  13. -:Answer the following qustions What is Microbiology? What are Microorganisms? Characteristics of cell ? Enumerate types of Microorganisms? Dr. Dalia Mohsen Associate professor of microbiology.

  14. 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. Dr. Dalia Mohsen Associate professor of microbiology.

  15. Choose the correct answer:- 1-True cells include the following Except a-Fungi b- Viruses c-Bacteria d-Human cell. 2-Eukaryotes include: a-Virus. b-Protozoa. c- Fungi. d-Both b,c. 3-Prokaryotic cell has no:- a-Ribosomes. b-Cell wall. c- Mesosome. d-True nucleus. Dr. Dalia Mohsen Associate professor of microbiology.

  16. Choose the correct answers:- 4-Prokaryotes include: a-Fungi. b-Human cell. c-Bacteria. d-Virus. 5-The baterial cell multiply by: a- Binary fission b-Budding c-Sexual multiplication d- Mitosis . Dr. Dalia Mohsen Associate professor of microbiology.

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