Micro Organisms

3,651 views

Published on

Micro Organisms

Published in: Technology, Education
3 Comments
3 Likes
Statistics
Notes
No Downloads
Views
Total views
3,651
On SlideShare
0
From Embeds
0
Number of Embeds
46
Actions
Shares
0
Downloads
273
Comments
3
Likes
3
Embeds 0
No embeds

No notes for slide

Micro Organisms

  1. 1. By Mohammad Osama Hassan Ally
  2. 2. <ul><li>Do you know what they are? </li></ul><ul><li>Its is an individual living system, such as animals and plants, that is capable of reproduction and growth ; and can only be seen through using a microscope . Micro-organisms include, and can be classified as bacteria , virus and fungi . </li></ul>Classification of micro-organisms: Bacteria: A large group of single-cell (made of one cell) microorganisms. Some cause infections and disease in animals and humans. The singular of bacteria is bacterium. Virus: Microscopic organism that relies on the genetic machinery of living cells to grow and reproduce (enters other cells and infect them) causing infections. Fungi: A group of organisms that lack chlorophyll (help in photosynthesis to make food) and obtain nutrients from dead or living organic matter (natural material)
  3. 3. <ul><li>Bacteria: </li></ul><ul><li>Are a singular cellular micro-organism, that vary in shapes and sizes. Some cause infections and disease , while others cure infections and disease . </li></ul><ul><li>They reproduce asexually. </li></ul><ul><li>Bacterium grow on soil, hot springs, radioactive material , sea water, and even in the Earth’s crust. </li></ul><ul><li>Fact! </li></ul><ul><li>There are around 40 million bacterial cells in a gram of soil, and 1 million bacterial cells in a millimetre of water. </li></ul><ul><li>Where can I find them: </li></ul><ul><li>M any foods and medicines involve bacteria produced; EG insulin producing bacteria genetically engineered to cure illnesses such as diabetes . </li></ul>
  4. 4. Mitosis (Asexual Reproduction ) Don't Click Here!
  5. 6. <ul><li>Virus: </li></ul><ul><li>They are smaller than bacteria, and reproduce by effecting a host cell. </li></ul><ul><li>They have a protein coating rather than a cell membrane. </li></ul><ul><li>They contain DNA. </li></ul><ul><li>Example: </li></ul><ul><li>AIDS: </li></ul><ul><li>Acquired immune deficiency syndrome is a set of symptoms and infections resulting to the damage of the human immune system caused by the human immunodeficiency (act of damaging the immune system) virus (HIV ). </li></ul>
  6. 7. Don't Click Here I MEAN IT!
  7. 9. <ul><li>Fungi: </li></ul><ul><li>Organisms that use living or dead organisms as food by breaking them down and then absorbing the substances into their cells. </li></ul><ul><li>Fungi make up one of the five kingdoms of living things on Earth. Mushrooms, yeast and molds are types of fungi. </li></ul><ul><li>Example: </li></ul><ul><li>Basidiomycetes: </li></ul><ul><li>They look a bit like clubs or baseball bats. This division includes mushrooms, puffballs and earth stars. They could be found in forests or farmed as vegetables, for eating. </li></ul>
  8. 11. <ul><li>Bacteria is involved in the decomposition of plants and animals. </li></ul><ul><li>Its is done by breaking down complex molecules into smaller simple molecules. </li></ul><ul><li>Bacteria is largely responsible for the recycling of carbon, nitrogen and sulphur. </li></ul>The Role of Bacteria In The Nitrogen Cycle:
  9. 12. <ul><li>Help preserve food </li></ul><ul><li>Keep us healthy </li></ul><ul><li>Breakdown harmful substances </li></ul><ul><li>Protect us from invading bacteria's </li></ul><ul><li>Provide us with chemicals we may be deficient of (insulin) </li></ul><ul><li>Prepare foods such as yogurts and cheese. </li></ul>Yeast cells are used in the preparation of this yogurt.
  10. 13. <ul><li>THANK YOU FOR WATCHING </li></ul><ul><li>14/05/2008 </li></ul><ul><li>By Mohammad Osama Hassan Ally </li></ul>

×