Photosynthesis and Cellular Respiration

2133 WordsJan 30, 20189 Pages
Introduction Cells are the basic units of life and their processes are vital to the functioning of all organism. The reactions of photosynthesis and cellular respiration are complimentary and are also the most important pathways on the Earth. Photosynthesis is a process that converts carbon dioxide into organic compounds in presence of sunlight. Cellular respiration is the set of metabolic reactions that take in cells of living organisms that convert nutrients like sugar into energy , which is known as ATP (adenosine triphosphate), and waste products. The two processes are closely related and likewise, they share many similarities and differences Processes in a Nutshell The main difference between photosynthesis and cellular respiration is that photosynthesis takes place in the chloroplast and cellular respiration takes place in the mitchondrion. Plants contain mitochondria and chloroplasts so both they may undergo both processes. However, animals and other heterotrophs undergo cellular respiration, but not photosynthesis. In a nutshell, the purpose of these processes is to convert free energy into ATP. Discovery of Photosynthesis The beginning of the discovery of photosynthesis began in the mid-17th century when J.B. Van Helmont carefully measured the mass of the soil used by a plant and the mass of the plant as it grew. After this noticed that the soil mass changed very little. He then hypothesized that the mass of the growing plant must come from the water.
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