Photosynthesis And Its Effect On Our Lives

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Introduction According to Biological Science, photosynthesis is defined as “the use of sunlight to manufacture carbohydrates” (Freeman, 2011). Even today, many organisms rely on photosynthesis to stay alive.µ Many plants are known as autotrophs, which is the ability to make their own food, while humans and other animals are termed heterotrophs, which is because they have to find the sugars and many other things the need to stay alive from other organisms. Because humans can’t live without plants for sugars, photosynthesis is fundamental to almost all life (Freeman, 2011). It was later on discovered that photosynthesis occurs in the only green portion of the plants, also known as chloroplasts. When more research was done within these chloroplasts, it was found that pigments, which are molecules that absorb only certain light wavelengths, have colors because we see the wavelength they reflect, rather than absorb. (Fountain, 2013). To determine which colors would be absorbed and which would be reflects, biologists used wavelengths to determine the type of electromagnetic radiation. This is known as the Electromagnetic Spectrum. The Electromagnetic Spectrum shows a variety of wavelengths, measured in nm. These wavelengths have a different color assigned to each, ranging from purple at 400 nm to red at 710 nm (Freeman, 2011). When a photon strikes an object, the photon may be absorbed, transmitted, or even reflected. When the photon is absorbed into the pigment molecule,

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