Photosynthesis vs. Cellular Respiration

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by JessicaAdinolfi
Last updated 5 years ago

Cell Biology

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Photosynthesis vs. Cellular Respiration

Photosynthesis vs. Cellular Respiration

Cellular Respiration The reactants of cellular respiration are Oxygen, and Sugars. The products are Carbon Dioxide, Water, and Light. C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2

PhotosynthesisThe reactants of photosynthesis are Light, Water, and Carbon Dioxide. The products of photosynthesis are Oxygen and Sugars.6CO2 + 6H2O + Energy --> C6H12O6 + 6O2

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Three Differences - In photosynthesis oxygen and sugars are the products, and in cellular respiration they are the reactants. -Photosynthesis occurs only in the cloroplast, and cellular respiration occurs in the cytoplasm and in the mitochondria. -Photosynthesis uses two electron transport chains, not just one.

Chloryphyll absorbs solar energy (sunlight), and it also collects water and carbon dioxide from the environment to complete the process of photosysnthesis. This process leads to oxygen and sugars. The oxygen is given off into the air, and the sugar is converted into starch, which is what plants feed off.

Five Similarities- They both occur in organelles. - They both utilize electron trasport chains.- Both provide power for cellular activities. -Both utilize ATP for energy. - Both use chemiosmosis to generate ATP

Cellular Respiration is broken down into three steps. The first step is glycosis, which begins with the simple sugar glucose. A single molecule of glucose is broken down into 2 molecules of Pyruvic Acid. The second step is known as "Citric Acid Cycle". In this step pyruvic acid from Glycolosis is modified and brought inside of the Mitochondria. This cycle will repeat and make the majority of molecules that are needed to make cellular energy. The electron transport chain is the final step of cellular respiration. This step uses pxygen to produce energy in the form of ATP. This step occurs on the membrane of the mitochondria, and it uses the molecules from the previous steps to power the creation of ATP.

AnologyPhotosynthesis and cellular respiration both pump protons across the membrane by the electron trasnport chain, but the process occurs in different organelles.


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