Sunday, December 6, 2009

Science Blog 11

1.What science ideas did you learn?

This week i learned about photosynthesis and respiration. We learned how to make the equations even. We also learned about fermantation and how that is respiration without oxygen. We learned that fermantation gives of alcohal instead of CO2. We also learned about DNA. We actually got to see real DNA from James' spit! We talked about how the DNA could be so big when the cell that it's in is microscopic.

2.How did you learn these ideas?

We learned about these ideas by doing research. We learned abotu respiration by doing experiments and having class disscusions to see what everyone thought. We learned about photosynthesis the same. We learned about fremantation because half of the class did an experiment that involved a balloon on a vial and we were going to see if the balloon grew, it did. We learned about DNA by doing this experiment where someone swooshes water in their mouths to collect DNA and then we added some other liquids to it. This helped us see the DNA and we could actually see what it looked like.

3.How might these ideas be helpful?

These ideas will be helpful because now that we are more educated on respiration, photosynthesis, and DNA, we can come to better conclusions about what we observe. If we see white and stringy stuff we will know that there is a possibiliy that it is DNA. If we see condensation on something we will know that something has to be respirating. Finally, if we see something moving that means it needs photosynethesis into energy.

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