The Spread of Germs

Today in class we first checked in the homework, looked over the scribe for the day, went over some of the tree map that was the night before homework, and finally watched the first five minutes of a Mythbusters clip about the spread of germs.

We also made another contribution to the Disease of the Day chart that we have been working on for the past week. Today's disease was Pneumonia which comes in the form of a virus, bacteria, of a fungi which are called pathogens. Pneumonia is transmitted by casual contact such as saliva or mucus. The disease caused an inflammation of the lungs and can be treated with antibiotics.

in the first half of the Mythbusters video, we watched Adam spread the liquid from the rig attached to the edge of his nose one drip at a time. after the first experiment was finished they turned off all of the lights and put all of the items covered by the liquid under the black light. it was surprising to see how far the mucus from one person's nose can spread to places not even thought possible is such a short period of time. The next experiment consisted of a party where Adam was hooked up to the same rig camouflaged so it looked like a irritated patch of skin. there were three people who knew about the liquid drippings and were supposed to avoid it as much as possible. There were also three other people who didn't know about the liquid drippings and were just invited to the party. Adam's party ended at the same time class ended so we have yet to see the ending.

HOMEWORK

-UP pgs.28-31 (use your book)
-Bio Day Tomorrow
-Postcard due 11/8/10
-Test on 11/9/10


THE NEXT SCRIBE WILL BE............................

SAM

The Sausage in the Cup

Today we did a lab which was an example of diffusion. diffusion is when one object passes through a cell or a cell membrane into a less densly populated area. The lab that we did involved a plastic tube about 7 inches long, 200ml beaker, glucose solution, an iodine solution, and a soluble starch solution. First we got the plastic tube and tied a string tightly to the bottom of it, then we filled it with the starch solution. After the tube was filled, we added 20 drops of glucose into the starch. Meanwhile the others in the group filled a beaker with water and added a good squirt of iodine into the beaker.

Then we put the plastic tube into the beaker and waited. while we waited we reviewed some of the organells that we have a test on for tomarrow.

When we came back the glucose and the starch had a purpleist tint to it. We later learned that the iodine from the beaked had diffused into the plastic bag. it did this because there was a large population of iodine in the beaker and some of it wanted to get into a less populated area.
That is how the lab went so we cleaned up and and started on answering the questions in the unit packet.
Homework :
-Finish diffusion lab, Pgs.33-35
-STUDY FOR ORGANELL QUIZ!





















The next scribe is Natatlie