what we did in class this week 12/18/09

This week in class we discussed cells and their functions. In class we made a chart of each structure and their function. Also this week we have been refreashing on photosynthesis, respiration, fermantation and protein synthesis. We have been reading from a science book to refresh our knowledge on these topics. We have a project coming up on the subject. your have to teach Mr. Finley about one of these topics. I'm doing a jeopardy game on photosynthesis as my project that includes a little bit about respiration. We also have a test coming up so we reviewed for the test which is on monday.

what we did in class 12/12/09

This week in class we learned about how DNA works. We learned that DNA gives of a code and that is how the cell knows how to function. We also learned the process of DNA. First DNA gives the cell a code. The mRNA then copies the code and gives it to the ribosomes. The ribosomes then crack the code. Then the solved code is given to the tRNA which gather all of the supplies needed to carry out the code. They then give the code to the ribosomes to build and now we have a protein.

We also learned how the proteins are actually made. The DNA strand unwinds releasing the code. Then the U base pair matches with the A base pair. The code is copied as many times as needed. then the RNA strands are read as a codon or a triplet. Each code represents an Amino Acid. this happens with every triplet and with every triplet make, one goes away leaving the Amino Acid and bonding with the other Amino Acid on the other triplet. This happens until the strand is complete and now you have a chain of amino acids. Using ATP it becomes a protein.

what we did in class 12/5/09

This week in class we discussed fermentation. Fermentation is respiration without oxygen or annerobic respiration. We wanted to know how this happened so we set up an experiment. We put water, sugar and yeast into a tube and shoock it up and we let it sit overnight with the lid closed. As a result, the next day we found that in the tube there was CO2, alchohol and energy. We learned that fermentation is respiration without oxygen or o2 and it makes alchohol. Respiration is with oxygen and it makes energy and both of them make CO2.

This week we also learned about DNA. We learned that its in every cell in your body. Within the cell its in the nucleus and it conrols things like a nucleus does. It is a molecule because it is made up of more than one cell and it looks like a twisted ladder. It is made up of two parts One is called the double helix which is also known as the backbone of sugar bacause it is made up of sugar. The other part is caled the base pair which connect the two helixes. We also learned that the full name of DNA is Deoxyribonucleic Acid which when u break it down is double oxygen suger molecule and that basicly is what DNA is.