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Prezi AI.

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Betöltés...
Átirat

which coatings does bio films form best on and worst on?

Our Hypothesis

DAY 4

Day 3

The slime grew bigger

and more noticeable.

We guessed that the microbial slime would grow best n the bottom bio film meaning there would be the most spots.

Some more slime grew and the slime from day one grew a bit bigger.

DAY 2

OUR LAST DAY, DAY 5

Nothing happened, it remained same :(

RIGHT OR WRONG

OUR HYPOTHESIS WAS RIGHT! All the germs and most of the bacteria sunk downn the string and reached the bottom plate slowly growing bigger each day.

There was a really, really

small dot of brown slime growing.

DAY ONE

Justin and I haven't seen

anything yet.

The Steps

MORE STEPS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

First, create an artificial pond by filling the large bucket with tap water. Fill the up to four fifths of the bucket

Then place it on newspaper and let it sit for 24 hours.

Then, hang the whole thing on a stick or dowel and put it over your artificial pond which is your bucket of dirt and water and wait for 2 weeks but Justin and I were lucky enough that we had some slime growing on the plates after 5 days.

EVEN MORE STEPS

Then, get your scissors and your empty soda bottle, the one that Justin had to pour 2L OF GOOD SODA DOWN THE SINK! Once you have the scissors, cut approximately 5cm off each end of the bottle

MORE STEPS

After that, pour 2 cups of dirt or mud into the bucket and stir in. Make sure the dirt is as free of chemicals as possible

EVEN MORE STEPS!

Then, cut the bottle into 5 equal strips with a knife or a scissor and flatten out the strips. Once that is done, get your hole puncher and punch a hole into eh end of the five strips.

THE HARDEST OF THE EVEN MORE STEPS

After that, get your strip of 1m string and put them through all the holes and tie a knot so that each strip of plastic is 3cm away from each other and leave 14cm of string hanging and tie that end to the fishing weights.

materials

Microbial Slime

Variables

Exposure to sunlight,

6 cups of dirt, weather.

  • TALL BUCKET
  • ARTIFICIAL POND
  • STICK OR DOWEL LONGER TAM A BUCKETS WIDTH
  • AN EMPTY 2 LITRE BOTTLE OF SODA
  • SCISSORS
  • HOLE PUNCHER
  • 2 MEDIUM -SIZE WASHES, FISHING WEIGHTS OR SMALL BALLS\
  • 2 PIECES OF STRING, EACH 1 METRE LONG
  • A SHALLOW BUCKET
  • MAGNIFYING GLASS
  • A COATING MATERIAL OR CREAM, E.G. VASELINE, HOT SAUCE OR NAIL POLISH
  • NEWSPAPER

Microbial slimes are bio films. They form when bacterial cells able to make large amounts of sticky, slimy substances called polysaccharides attach themselves to a surface, in this case, it is 5 strips of plastic from an empty soda bottle

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