8C MICROBES AND DISEASE Slide 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? Slide 3 Top trumps Slide 4 Micro-organisms
The word MICRO means very small. (So you need a Microscope to see
it!) http://www.cellsalive.com/howbig.ht m Micro-organism Man!
Slide 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 Slide 6 Microbe uses carousel You will be assessed in this
activity for AF2 Slide 7 Seven wonders of the microbe world Slide 8
Bread mould experiment You are going to look at mould growing on
bread over 2 weeks. Slide 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? Slide 10 Bacteria The 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 Slide 11 Bacteria can double in number every 20 minutes!
Slide 12 The motility (movement) of some bacteria in culture.
Pseudomonas aeruginosa How fast! Slide 13 Good bacteria Bacteria
help to break down faeces (poo) in sewage works. Slide 14 Bad
bacteria in the mouth cause teeth to rot. Mouth bacteria Mouth
bacterium Slide 15 MRSA- the bacterial superbug! M ethicillin R
esistant S taphylococcus a ureus Methicillin (an antibiotic) WONT
Work to cure this infection! Slide 16 Slide 17 Bacteria Cytoplasm
Circle of DNA Cell wall Cell membrane Slide 18 Bacteria
CytoplasmCircle of DNA Cell wall Cell membrane Sometimes has a TAIL
to help it swim Slide 19 Structure of viruses Slide 20 How viruses
replicate inside cells Slide 21 Examples of viruses A T4
bacteriophage. This infects only bacterial cells, in this case only
E. coli The HIV virus. This attacks T4 lymphocytes. It is
responsible for AIDS. Slide 22 One sneeze can transmit many cold
virus particles Slide 23 Bird flu virus Slide 24 Measles virus
Electron microscope picture of the measles virus Boy with measles
Slide 25 Viruses cause warts, cold sores and verucae Slide 26
Conjunctivitis Slide 27 Foot and mouth disease is caused by a virus
and is VERY infectious for cows To this From this Slide 28
Treatment of viral infections Slide 29 Virus Protein Coat Strand of
DNA Slide 30 Virus Protein Coat Strand of DNA SMALLEST microbe Also
NOT technically alive Slide 31 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. Why did the mushroom
want to go out with the toadstool? Because he was a Fungi to be
with! Slide 32 Examples of fungi Mould growing a bread bun Yeast
cells budding There can be good forms of fungus (used to make
bread/beer) and bad forms (Mould, Athletes foot and thrush). Slide
33 Mould and fungus causes things to breakdown Slide 34 Fungus
taking over Slide 35 Athletes foot Slide 36 Oral thrush Thrush
yeast cells Slide 37 Fungi Starch granule Nucleus Cell membrane
Cell wall Vacuole Cytoplasm Slide 38 Fungi Starch granule Nucleus
Cell membrane Cell wall Vacuole Cytoplasm BIGGEST microorganism
Slide 39 Sort the cards into if they are caused by a bacteria,
virus or fungus Slide 40 MICROBE BINGO Slide 41 Similarities and
differences What do bacteria and viruses have in common? How are
viruses different to bacteria and fungi? Slide 42 Mould What is
mould? Why does food go mouldy? Name 5 different methods of
stopping mould growth and explain why they stop it. Slide 43 Mould
investigation Aim: To investigate how to stop mould growing in
gravy Variables Independent: Dependent: Control: Prediction Slide
44 http://www.ehow.com/how_6317533_make-
nutrient-agar-home.htmlhttp://www.ehow.com/how_6317533_make-
nutrient-agar-home.html Slide 45 Gravy experiment results and
conclusion Slide 46 PEER ASSESSMENT FOR AF5 Slide 47 Yeast What
type of microbe is yeast? What do we use yeast to make? What types
of respiration does yeast do? Slide 48 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 Slide 49 Aim: to observe yeast growth
Time (mins)Height of bubbles (mm) Slide 50 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?
Slide 51 Bread mould 2 week results Slide 52 Match the defense
mechanism to its use Slide 53 The immune system What is the immune
system? Which cells defend us against disease? How do they defend
us? Slide 54 Video Slide 55 Vaccination Which cells produce
antibodies? How do these cells respond when the body is infected?
Why do vaccinations stop you getting ill again? Slide 56 Video
Slide 57 Slide 58 Slide 59
