Science October 18

This week we finally tested for organisms in the pond water, in the chicken, on the knife, on the pan, and in or on the bread samples.We had to have one microsope test and test at least two things in a petri dish. Before we were allowed to use the microscopes we had to take three quizes.

Monday: I was not there on Monday because of a doctors appointment. When I got to class in the last five minutes the rest of my group was doing a reviw sheet. We did not get much done.

Tuesday: On tuesday we made our petri dish and took the written parts quiz. We first divided the petri dish into fourths and labled them. One was chicken surface and another was top of bread. The other two were knife handle and pond water. The parts quiz was difficult, it took a while but I remembered all but one part, the Body Tube. The day helped me learn to write my procedures as specific as posible.

Wednesday: We observed our petri dish from yesterday. My prediction was that the chicken and knife would have the same amount and that the pond water would have the most bacteria also. I was wrong on both acounts. The chicken ended up having it's whole quarter filled with yellow bactiria. The water had a lot, just not as much. The knife had only 10 small colonies and the bread had none. After everything was recorded, we took the oaral parts and functions quiz.

Thursday: We observed our petri dish one more time. The chicken looked the same, maybe a little bigger. The pond water had more colonies than the day before and they were bigger. The colonies on the knife had gotten bigger. Three that had been close the day before has fused because they grew. The top to the bread still had no bacteria. Then we took the slide making quiz. After that we were free to use the microscopes. We wrote down our procedures, got them approved and spent ten minutes on a microscope looking at pond water. We did not make any pictures on thursday which was a mistake.

Friday: We spent the whole class looking at the pond water through a microscope. We found a very fast organism that looked like a shrimp. It had two eyes, a tail to move with, feelers coming from a mouth of some sort, and multiple legs from its abdomen. It did not look like its eyes were very good because it kept hitting plant life. I looked it up and it is a form of crustation. It is a water flea. The type of water flea I, was unable to determine.

Now my group just needs to get the blood results and make our lab reports.