Micro-organisms. Kingfishers Autumn 1 2013. Why does the tongue have so much bacteria on it?. There is lots of old bacteria at the back of the mouth. Can you get a soap version of disclosing tablets to show the bacteria on your hands?. Introduction. What do we know about micro organisms?
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There is lots of old bacteria at the back of the mouth
Can you get a soap version of disclosing tablets to show the bacteria on your hands?Introduction
It’s living because it can die.
It’s dead because it’s been picked
It’s dead because it can’t do anything
It’s dead because it doesn’t do anything useful
The picked flower is dead because it’s getting no life from the plant
Mouldy bread is alive because it has bacteria on it and bacteria are living things.
The toothbrush is neither dead nor alive because it was never alive. To die, something must first live.
The picked flower is living because it is dying and isn’t dead yet.
The picked flower is dead because it has no stuff for it to grow with
How does mould grow?
If mould is alive, why does it not move?
How does mould get on to the bread?
How is blue cheese a micro-organism?
Is mould formed by living life forms or is it a life form in itself?
How does mould form in liquid??
How many places can mould form?
How did this (food getting mouldy) happen? Can it be beaten?
How long does something take to turn to mould? How quickly does it spread?
Why do bacteria like rotting food so much?
How many different foods does bacteria grow on?
Can mould grow on or in a human body?
What did that green gloopy puddle have to do with microorganisms?
Why do bread, cakes and cheese get the most mouldy?
What was yoghurt doing in a film about microorganisms?
Why was a man (surgeon) putting yellow stuff on his arm?
What did injecting yourself have to do with germs?
How many types of mould are there?
How many shapes does bacteria come in?
We carried out an investigation to see which temperature yeast prefers
We gave it sugar to feed on and put it in cold, warm or hot water in a bottle with a balloon on top. As it feeds, it produces gas which blows up the balloon. The faster and bigger the balloon inflated, the more the yeast was thriving in its conditions.
Cold water Further
Therefore we concluded yeast prefers warm conditions.
This suggests yeast is living because it is sensitive to its environment
We observed bananas left for two weeks - some had yeast on them, others didn't.
The bananas with yeast on decomposed more quickly, turning to liquid by the end of the two weeks.
This shows how micro-organisms help to break down waste
It suggests that micro-organisms are living because the yeast was feeding on the banana
No yeast after 2 weeks warm water
With yeast after 2 weeks
We searched the school for micro-organisms at work. We took photos on the iPads and created mind maps of the useful and harmful micro-organisms all around us.
We washed our hands very carefully, following instructions from paramedic Mr Eves (Katie's dad)
Then we scrubbed our hands following instructions for surgeons. Surgeons have to be much more thorough and it took AGES!
We considered the arguments for and against using anti-bacterial soap in the home and found scientific evidence to support both arguments before coming to our own conclusions.
Surgeons have to use anti-microbial soap to make sure their hands are sterile before operating. These soaps are now available for use in the home but do we need to have sterile hands at home? Are these soaps good for us?
We used a special gel,which showed, under UV light, where the bacteria collects on our hands.
We played an information-trading game where we learned about different aspects of our immune system from info cards and explained what we had learned to other groups.
We read 'The Death of Smallpox' and learned about Edward Jenner and the first vaccinations.
We used the badger learning app to complete a quiz on the immune system set by our teacher.
Then we made our own quizzes or fact files on the immune system and vaccination.