Megan Evans

Cellular Respiration & Photosynthesis


The function of photosynthesis is to capture energy, taken from sunlight, and store it as sugars. This process occurs in the chloroplast which are located in the leaves of plants.

One way a plant can undergo photosynthesis is through a light dependent reaction in the thykaloid. In photosystem 2, light splits water and sends electrons to a higher energy level. Then, in photosystem 1 light sends the electrons to an even higher level to create ATP for the second stage of photosynthesis. The second way a plant can carry out photosynthesis is in the stroma, with the Calvin Cycle, with light independent reactions. In the cycle ATP is used to make Glucose from Carbon Dioxide and Ribulose.

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Cellular Respiration

Cellular respiration is a process that both plant and animal cells carry out. The objective is to release energy that was stored in the form of sugars during photosynthesis. Cellular respiration takes place in a cell's mitochondria. During the process glucose is broken down into Carbon Dioxide which produces electrons. the electrons are combined with oxygen to create ATP.

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Both Photosynthesis and Cellular respiration can take place in a plant. The two also follow special equations. A very distinct similarity between Photosynthesis and Cellular respiration is that the reactants of one are the products of the other and the products of the first are the reactants of the second.