Saturday, December 5, 2009

awesome alex!

This week was all about Photosynthesis and Fermination. First photosynthesis is just like a huge cirlce along with respiration. From the chloroplast to the mitocondeia produces energy (sunlight and carbohydratrates), water (H2O), oxygen

(O2), and carbon dioxide (CO2). From the mitocondria to the chloplast produces energy, H2O, O2, and CO2. From this you can see the cycle that is being shown. Along with respirationa dn photosynthesis, if animals and plants are both part of the respiration cycle if all animals dyed than something would get messed up. Animals inhale oxygen from the plants and then exhale carbon dioxide. Then the plants give off oxygen so WE can breath and vise versa(only with carbin dioxide). Since this is a cycle niether species would be able to get back that oxygen or carbon dioxide to keep the cycle continuous. Fermination is respiration without oxygen. The reactants of fermination are glucose which are sugar, and the products are carbin dioxide, alcohol, energy and for animals lactic acid. We also did a fermination experiment.

First to see if when we put reactants to fermination, yeast and sugar, and water, into the test tube we would get the smell of alcohol and carbin dioxide would be "ehaled". To tell if there was carbin dioxide being exhaled we put a balloon over the top of the test tube to see. Our results were positive to our first prediction!

Lastly we learned about DNA. DNA is just your parents dna mixed together since no to people have the same DNA except for twins. As we learned DNA is not a cell beacuse it is made up of cells. I think that DNA is formed into a long stringy form because DNA is made up of a bunch of cells, and once they all come together they form this type of formation. :)


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