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8C MICROBES AND DISEASE

8C MICROBES AND DISEASE. MICROBES. What is a microbe? What are the three types of microbes? Give an example of each. What do we use microbes to make?. Top trumps. Micro-organisms . The word MICRO means very small. (So you need a Micro scope to see it !)

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8C MICROBES AND DISEASE

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  1. 8C MICROBES AND DISEASE

  2. MICROBES • What is a microbe? • What are the three types of microbes? Give an example of each. • What do we use microbes to make?

  3. Top trumps

  4. Micro-organisms The word MICRO means very small. (So you need a Microscope to see it!) http://www.cellsalive.com/howbig.htm Micro-organism Man! 

  5. Micro-organisms Micro-organisms Micro- very small Organism- a living thing. So Micro-organisms are very small living things! N.B Viruses are often classed as micro- organisms but technically they are NON-Living so call them Microbes instead! Micro- organism man 

  6. Microbe uses carousel • You will be assessed in this activity for AF2

  7. Sevenwonders of themicrobeworld

  8. Bread mould experiment • You are goingto look at mouldgrowingon bread over 2 weeks.

  9. Diseases • What is the scientific word for a microbe that causes disease? • Name an example of a disease caused by a bacteria, virus and fungus?

  10. BacteriaThe good the bad and the ugly! Bacteria are small living single celled organisms that can come in good (beneficial) forms and bad (pathogenic) forms that cause disease. Some different shapes of bacteria

  11. Bacteria can double in number every 20 minutes!

  12. The motility (movement) of some bacteria in culture. How fast!   Pseudomonas aeruginosa

  13. Good bacteria Bacteria help to break down faeces (poo) in sewage works.

  14. Bad bacteria in the mouth cause teeth to rot. Mouth bacteria Mouth bacterium

  15. MRSA- the bacterial superbug!MethicillinResistant Staphylococcus aureus Methicillin (an antibiotic) WON’T Work to cure this infection! 

  16. Bacteria Cell membrane Cell wall Cytoplasm Circle of DNA

  17. Bacteria Cell membrane Cell wall Cytoplasm Circle of DNA Sometimes has a TAIL to help it swim

  18. Structure of viruses

  19. How viruses replicate inside cells

  20. Examples of viruses The HIV virus. This attacks T4 lymphocytes. It is responsible for AIDS. A T4 bacteriophage. This infects only bacterial cells, in this case only E. coli

  21. One sneeze can transmit many cold virus particles

  22. Bird flu virus

  23. Measles virus Electron microscope picture of the measles virus Boy with measles

  24. Viruses cause warts, cold sores and verucae

  25. Conjunctivitis

  26. Foot and mouth disease is caused by a virus and is VERY infectious for cows From this To this

  27. Treatment of viral infections

  28. Virus Protein Coat Strand of DNA

  29. Virus Protein Coat Strand of DNA SMALLEST microbe Also NOT technically alive…

  30. Why did the mushroom want to go out with the toadstool? Because he was a Fungi to be with! Fungi Fungi are organisms that produce spores and come in the form of moulds, yeasts, mushrooms and toadstools. They also help things to rot and breakdown which is an essential process in the cycle of life. 

  31. Examples of fungi Mould growing a bread bun There can be good forms of fungus (used to make bread/beer) and bad forms (Mould, Athletes foot and thrush). Yeast cells budding

  32. Mould and fungus causes things to breakdown

  33. Fungus taking over

  34. Athletes foot

  35. Oral thrush Thrush yeast cells

  36. Fungi Cell membrane Cytoplasm Cell wall Nucleus Starch granule Vacuole

  37. Fungi Cell wall Starch granule Vacuole Nucleus Cytoplasm Cell membrane BIGGEST microorganism

  38. Sortthecardsintoifthey are causedby a bacteria, virus orfungus

  39. MICROBE BINGO

  40. Similarities and differences • What do bacteria and viruses have in common? • How are viruses different to bacteria and fungi?

  41. Mould • What is mould? • Why does food go mouldy? • Name 5 different methods of stopping mould growth and explain why they stop it.

  42. Mould investigation Aim: To investigate how to stop mould growing in gravy Variables Independent: Dependent: Control: Prediction

  43. http://www.ehow.com/how_6317533_make-nutrient-agar-home.html

  44. Gravy experiment results and conclusion

  45. PEER ASSESSMENT FOR AF5

  46. Yeast • What type of microbe is yeast? • What do we use yeast to make? • What types of respiration does yeast do?

  47. Plan an investigation into one factor that affects yeast growth • You are going to put yeast, sugar, a drop of washing up liquid and warm water in a measuring cylinder • Choose one factor to change and investigate Write the Aim, prediction, and variables

  48. Aim: to observe yeastgrowth

  49. The first line of defense • How can diseases be passed from one person to another? • What is the bodies’ first line of defense to stop microbes entering?

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