Bemutatkozik:
Az Ön új prezentációs asszisztense.
Minden eddiginél gyorsabban finomíthatja, fejlesztheti és szabhatja testre tartalmait, találhat releváns képeket, illetve szerkesztheti vizuális elemeit.
Népszerű keresések
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
Variables
Exposure to sunlight,
6 cups of dirt, weather.
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