Cellular Respiration and Photosynthesis Problem Solving Discussion
To emphasize this point even more, the equation for photosynthesis is the opposite of cellular respiration.
The newly split carbon molecules then provide electrons to NAD+ to form NADH, and simultaneously creating four additional ATP molecules. Afterwards the pyruvic acid will then lose a carbon molecule, changing into Acetic acid and beginning the citric acid cycle, in which the glucose is further broken down to CO2, an unneeded product, essentially waste. Afterwards, the enzymes used in this process dissolve within the mitochondria, in effect recycling on a molecular level. NADH is generated as the fuel oxidizes. Following that, CoA is created as each of the remaining acetic acid molecules attach to molecules named “coenzyme A” and then are delivered to the first reaction of the citric acid cycle. It is at this point that the CoA is removed and then recycled to re-attach to another acetic molecule all over again. While in this cycle, the acetic acid combines with additional carbon molecules to become citric acid. Each time one of these molecules starts the cycle as fuel two additional co2 molecules are “Wasted”. This process is done once for each glucose molecule. The third stage in this process is the electron transport. During this phase, electrons obtained by the reactions completed in the first two stages travel down transport chains to oxygen. Within the inner membrane of the mitochondria is where the proteins and molecules that are the essence of this chain are located. This transport process is where the majority of the energy released creates ATP. A small amount of ATP is also created during the first two stages as well. ATP is the key to this entire process, as certain amounts of it are created in every step, and simultaneous also spent in each step as well. This creates a self-sustaining cellular cycle of energy production and use. Photosynthesis is similar to cellular respiration, in that it is a process of obtaining energy. However, while cellular respiration is completed through animals (and some plants) by converting food and organic molecules to energy, photosynthesis is the process of converting energy from light sources, namely the sun, into chemical energy for plants, algae, and some bacteria’s. Photosynthesis is a process that occurs within organelles called chloroplasts. These organelles are able to absorb light, and are located inside of leaves. Within the leaf are tiny pores defined as stomata, in which carbon dioxide can enter, and oxygen can exit, the reverse process that in which most animals breathe. Just like animals, the process of photosynthesis needs water, although rather than ingested, water is absorbed through the plants roots and carried up to the leaves. The stomata is perhaps the most critical piece to this process, as this is where CO2 enters and can be stored, and where water and O2 exit.
This makes the products new substances that are chemically different from the reactants. Photosynthesis is a series of chemical reactions that convert carbon dioxide and water into glucose (sugar) and oxygen in the presence of sunlight.
Del, Giorgio, and Williams Peter. Respiration in Aquatic Ecosystems. Oxford: Oxford University Press, 2005. Print.
Lambers, Herbert, and Miquel, Ribas. Plant Respiration: From Cell to Ecosystem. Dordrecht: Springer, 2005. Print.