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Microorganisms - Friend or foe
- 1. Microorgansms: Presented by Elwin Binu Friend and foe
- 2. Table of Contents Let’s gather all what we learned today. 01 The 5 types of Microorganisms Harmul micrroorganisms 04 Introduction to microorganisms Friendly microorganisms How microbes are beneficial to us. Microorganisms which are bad guys Evaluation 02 03
- 4. A microorganism, or microbe, is a microscopic organism that is so small that it is invisible to the naked eye. They can be single or multi celled, they can live alone or in colonies. What are microorganisms?
- 5. In order to grow successfully, microorganisms must have a supply of water as well as numerous other substances including mineral elements, growth factors, temperature and gas, such as oxygen. “Most microorganisms can survive under any kind of condition.”
- 6. Bacteria Eg. Typhoid, tuberculosis, rod- shaped bacteria, cholera Fungi Eg. Bread mold, mushroom, Athlete’s foot Protozoa Eg. Dysentery, malaria, Amoeba, Paramecium Algae Eg. Chlamydomonas, Spirogyra Virus Eg. Influenza, Cold, Coronavirus, Measles Classification of Microorganisms
- 9. Where microbes come in handy Food production Soil fertility Decomposing bacterium and blue-green algae fix atmospheric nitrogen to the soilwhich is essential for the growth of plants. Medicines and vaccines Different microorganisms like Yeast and Lactobacilli are useful in making food products like Curd, Bread, Cake and Wine. Cleaning the environment Antibiotics are actually just particular microorganisms which inhibit (kill) the growth of the bad guy microbes. They are used in vaccines too Some microorganisms can decompose dead organic matter into simpler substances which can be used by plants.
- 12. ● The microorganisms that cause diseases in living beings are known as pathogens. ● The pathogens can enter our bodies through air, water and food. ● Some pathogens are transmitted directly from an infected person. ● The diseases which are transmitted by an infected person directly or indirectly are known as communicable diseases. For eg., common cold, tuberculosis, etc. ● Microorganisms also grow on food and spoil it. That is why preservatives are added in the food to prevent it from spoilage. Some microorganisms are harmful
- 14. Let’s try and recall what we have learnt while we watch this video. Recap
- 15. Methods of food preservation They cannot live without air Using artificial preservatives Makes conditions where they cannot survive Reducing moisture by reverse osmosis Pickling makes an atmosphere where microbes cannot thrive Sudden heating/cooling Vacuum packing Chemical method Heat/Cold trewatments Salt/Sugar Canning in Oil/Vinegar Pasteaur ization
- 17. 03 Evaluation
- 18. When were the many times you’ve heard about microorganisms? .1Eg. Let’s discuss 1. The coronavirus pandemic
- 19. CREDITS: This presentation template was created by Slidesgo, including icons by Flaticon, infographics & images by Freepik and illustrations by Stories Thanks! Any doubts on the topics I taught can be cleared now.