Group+7

1. Each student needs to upload their word document from the H drive. Click on the edit button to the right. Click on the image that looks a picture with an orange circle and green and blue. This allows you to upload your document. 2. Once all 4 essays are uploaded- each of you needs to read one other students work. 3. You can then make comments below their hyperlink. Make sure you are in the edit page. Let them know 2 positive comments and 2 constructive criticisms. How is their essay good and how can it be better? Wyatt Hurley Per.7/8 10/20/09

Photosynthesis and Cellular Respiration are two very different reactions. Photosynthesis is the process in which autotrophs change sunlight into useable energy, this reaction happens in plants. Cellular Respiration occurs in animals, and is the process where the lungs takes in the oxygen and glucose and turn it into A.T.P (energy). These two cycles are completely opposite from each other because the products of photosynthesis are the reactants of Cellular Respiration. First off, the reaction for photosynthesis is 6O2+6H2O à C6 H12 O6+6O2 and Cellular Respiration’s is C6H12O6+6O2 à 6O2+6H20. For photosynthesis and Cellular Respiration the cycle starts off outside the plant in the sun and in the air. The chloroplasts take in carbon dioxide and sunlight, and the roots take in water. In Cellular Respiration the stomach and the lungs seek for oxygen and food. Secondly, the Water and light are used in the light reaction to make A.T.P, the Carbon dioxide is used in the Calvin cycle to make A.D.P, and the products of that is oxygen and sugar. In Cellular Respiration the second thing to happen is the glucose is taken into the Glycolysis cycle and turned into Pyruvic acid, which is then transported to the Krebs cycle in the mitochondria from the cytoplasm. Then the Krebs cycle turns the Pyruvic acid into chemical energy. And finally the chemical energy is transported out of the Krebs cycle into the Electron Transport Train where it is turned into A.T.P. These processes are essential for life because they produce oxygen in which every animal needs to live, and the carbon dioxide isn’t filling the atmosphere as rapidly. .

**Codee Green October 20, 2009** **__ Photosynthesis vs. Cell respiration __ ** Photosynthesis is considered the main action to produce food because plants use it every day. This is basically the process when autotrophs (plants) change sunlight into a useable form of energy. Which means that plants use sunlight to make heat energy, than use that energy to produce food for themselves. Photosynthesis uses molecules called pigments, they are helpful because it absorbs wavelengths of light and reflects others. The usage of pigments leads to chlorophyll, what is chlorophyll? Well, in an understandable way of describing this it’s a pigment that absorbs blue, red, and violet coloring, but reflects green. Chloroplasts are actually located inside the chlorophyll, this is important because the chloroplasts are organelles that perform photosynthesis. How? The chloroplasts turn the light energy they receive into oxygen that slowly diffuses out of the cell. After all this ATP (Adenosine Triphosphate) other known as energy is created. An important function tying in with pigments and chlorophyll is called carotene, a pigment that reflects orange. Violet, blue and red are the wavelengths that provide energy for photosynthesis. The equation is 6 CO2+H2O à **** C6H12O6+6 O2 this shows that the left side of the equation represents the reactants, and the right side represents the products. Reactants are what goes into the cell, and products are what comes out of the cell. Reactants and products are important to photosynthesis because what’s produced in your body is used by plants. This process is important to life because it helps plants live, and gives off oxygen. The two stages that are used in the photosynthesis process are light dependant reaction and the Calvin cycle reaction. The light reaction is the process where light is absorbed in thylakoids, H2O is split, O2 id diffused out of the cell and ATP is produced. The Calvin cycle is where ATP and CO2 are used, and sugars (glucose) are produced. Cellular respiration is a chemical energy in food molecules. During this process energy is released and formed into an ATP molecule. The equation is just simply opposite of photosynthesis. It is C6H12O66 O2 à **** 6 CO2+H2O the reactants are on left of the equation go into the cell, and the products on the right side of the equation still come out of the cell. Meaning that the products leave, and the reactants make up the products when they enter the cell. The location where cell respiration happens is in the heteroph (animal cell). Particularly in the cytoplasm and/or the mitochondria. In these areas many things happen in order to make cell respiration work. There are three stages to this process. Which are gylcolysis, than the kreb cycle occurs after that, finally ending off with electron transport. In the glycolysis cycle glucose is turned into pyruvic acid. Pyruvic acid= lactic acid + energy. This is the reason to why we get sore muscles. The stroma is connected in with glycolysis because a stroma is cells that are connective tissue cells of an organ found in the loose connection tissue. After the glycolysis stage the Krebs cycle comes into effect. In this cycle chemical energy and ATP process into electron transport from the chain of the mitochondria to the membrane. The glycolysis cycle has 2 ATP total, the Krebs cycle has 2 ATP total as well, and electron transport has 32 ATP total. Adding up to 36 ATP used in the cell respiration cycle. Ways that cell respiration and photosynthesis are similar is, they both have products and reactants. Which means they both need energy. The equations are also similar in multiple ways. Even though they are opposite, products and reactants are still represented in each equation. Another similarity is, they both need to use ATP in order to finish their individual ways of processing. In order for photosynthesis and cell respiration to work they must use ATP to complete the cycle. Both of these processes are important to environments all over the world. In order for people and animals to survive photosynthesis and cell respiration is needed. Producing food, or having food is important for organisms to survive. These two processes balance each other out because one makes what the other needs in their individual process. Each process is crucial for living, which makes them so important to everything living. **
 * Block 7/8 **
 * Cells are very lenient on two main topics when it comes to producing food. The master minds behind this process are photosynthesis and cell respiration. Two fascinating processes that connect with the development of food. Yes, these two particular topics are similar in some ways, but they are also very different.