Group+4

​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?

Kortney Manzanares Block 7/8 10/22/09

** Photosynthesis and Cell Respiration ** How Each is Alike and Different

Photosynthesis and cell respiration are two very similar processes but they also differ in some ways. Each of these processes is essential to life on earth. Without photosynthesis, respiration could not happen and without respiration, photosynthesis could not happen. In other words, these two processes are interdependent on each other and need the other to work. Each have different things that make them work, things that result as a product of them, locations, and reasons they are important. Photosynthesis is an essential thing to life on earth. Without photosynthesis there would be no oxygen on earth for humans to breathe and the human race would not exist. Photosynthesis is a process in which plant cells take light energy (sunlight) and the water they receive naturally and convert it into glucose or sugar and give off oxygen. This sugar, or glucose, provides the plants with 'food' to give them energy and carry out life functions. The things that make photosynthesis work, or the reactants, are water, carbon dioxide (6CO2 + 6H2O), and sunlight. After photosynthesis occurs, the products are oxygen and glucose (sugar). Photosynthesis takes place in the chloroplast in a plant cell. Photosynthesis does not occur in animals, only plants. There are two stages in the process of photosynthesis. The first stage is a light reaction. In the light reaction, water and sunlight react with each other. This reaction produces ATP ( a form of energy for cells) and lead to the other stage in photosynthesis. A light dependent reaction is when light is absorbed by the thylakoids (a disk shaped structure in the chloroplast that contains photosynthetic pigments), water is split, oxygen diffues out of the cell and ATP is produced. The second stage of photosynthesis is called the Calvin Cycle. The Calvin Cycle uses ATP and carbon dioxide to produce the glucose a plant needs. The energy used in photosynthesis is changed from light energy into chemical energy. Most of the energy the is released from cell respiration is released in the form of heat energy.Photosynthesis is important to life because it provides living organisms with oxygen to breathe and perform cell respiration. Cell respiration is another crucial process to survival of humans and animals on earth. This process is almost the exact reverse of photosynthesis. Respiration uses photosynthesis' products as its reactants. The products of respiration are carbon dioxide and energy (C6H1206 +602). The reactants that fuel respiration are oxygen and glucose (sugar). Respiration takes place in the cell of an animal and plants don't do respiration. Inside the cell of an animal, respiration occurs mainly in the cytoplasm and mitochondria. The mitochondria is like the power house of the cell, providing it with energy to function. Like photosynthesis, there are multiple stages in the process of respiration. The first stage of respiration is glycolysis. In glycolysis, glucose is broken down into pyruvic acid and ATP energy. Glycolysis takes place outside the mitochondria in the cytoplasm. This stage does not require oxygen. The next stage of respiration is the Krebs Cycle. The Krebs Cycle takes place inside the mitochondria. The Krebs Cycle produces ATP molecules that are used as energy in the cell. The last stage of respiration is ETC or electron transport chain. This stage produces 32 ATP. These three stages of respiration all require oxygen, meaning they are aerobic. The energy in these stages changes from chemical to kinetic. Respiration is essential to life because it uses the oxygen that living things produce to provide them with energy to live and perform life functions.

 Adam Wright  10/20/09 **Photosynthesis vs. Cell respiration ** Photosynthesis and cell respiration are different in many ways however they both are essential to life. Also they both rely on each other to work. Photosynthesis occurs in the chloroplast of a plant cell. Cell respiration  occurs in the cytoplasm in the mitochondria of an animal cell.  The energy flow in Photosynthesis is light to chemical. The energy flow in Cell respiration is from chemical to kenetic.  Photosynthesis occurs in plant cells only. It occurs in the plant cells chloroplasts. The reactants of photosynthesis are 6 CO2(Carbon Dioxcide)+6 H2O(water) and the products are C6H12O6(Glucose)+6 O2(Oxygen).  This process is important to life because it makes Oxygen and Glucose  which  are both essential to cellular respiration and for us, and all other animals,to breathe. The order of the two stages of photosynthesis are light enters the the thylakoid and it turns it into ATP(light reaction) . Then the ATP and carbon dioxcide is used to make sugar and ADP (Calvin cycle) . The energy changes from light energy to chemical energy. Cell Respiration is only in animal cells. It occurs in the animal cells mitochondria. The products of cell respiration C6H12O6+6 O2 and the reactants are 6 CO2+6 H2O <span style="color: #008000; font-family: Arial,Helvetica,sans-serif; font-size: 12pt;">(use words, klm). <span style="font-family: 'Arial','sans-serif'; font-size: 12pt;">his process is essential to life because it makes the products for photosynthesis and <span style="color: #008000; font-family: 'Arial','sans-serif'; font-size: 12pt;">it is how we breathe (this is the wrong information, klm) <span style="font-family: 'Arial','sans-serif'; font-size: 12pt;">. Glycolysis is the first stage of cellular respiration and the second stage is the <span style="color: #008000; font-family: 'Arial','sans-serif'; font-size: 12pt;">citric acid cycle (incorrect information, klm) <span style="font-family: 'Arial','sans-serif'; font-size: 12pt;">, the third stage is electron transport. <span style="color: #008000; font-family: 'Arial','sans-serif'; font-size: 12pt;">(describe these stages and what they do to help cell respiration,klm) <span style="font-family: 'Arial','sans-serif'; font-size: 12pt;">The change in the energy is from chemical to kenetic energy. This is how cellular respiration and photosynthesis are different but essential to both life and each other.( <span style="color: #008000; font-family: 'Arial','sans-serif'; font-size: 12pt;">conclude the differences and similarities and relate back to something you said in your introduction. this will help you have a better conclusion that is more than one sentence, klm) In all I liked this paper but there are a few things I think you should review, go over and change in your paper. There are a few things you said that are incorrect. Some other things need more explanation to be better understood. You had a really good topic sentence and the first few senteces were very good. I also liked your reasons that these processes are important to life. Good job, keep up your good work.(: