AP Biology Period 5
2 October 2013
CHAPTER 7 STUDY GUIDE
AN OVERVIEW OF PHOTOSYNTHESIS
Autotrophs are plants that can feed themselves by making their own food. Photo-autotrophs are organisms that produce organic molecules from inorganic molecules using the energy of light. Producers are when plants make their own organic molecules. A redox reaction is oxidation and reduction. Photosynthesis takes water and carbon dioxide to make glucose and oxygen. Cellular respiration takes glucose and oxygen to make water and carbon dioxide. ● Chloroplasts have an outer and inner membrane. There is intermembrane space and thylakoid space. There is stroma and grana and thylakoid. Chloroplasts are found in mesophyll cells. ●The thylakoids is the part that most light energy is converted into chemical energy. Plants produce oxygen by photosynthesis and breaking the water. The plants extract the oxygen ●The oxygen that is produced from photosynthesis was found to come from water. ●The reactants in light reactions are light and water. The product is oxygen. The Calvin cycle takes in carbon dioxide to make sugar. ● Photosynthesis relates to these reactions. Photosynthesis uses the redox reaction to make glucose and oxygen. Light reactions take in water and light to make oxygen. The Calvin cycle takes in carbon dioxide to make sugar.
THE LIGHT REACTIONS: CONVERTING SOLAR ENERGY TO CHEMICAL ENERGY ● Chlorophyll takes in light energy. Other photosynthetic pigments like carotenoids and phycobilins indirectly participate in the photosynthesis by trapping photons from different wavelength of light and passing it to chlorophylls for photosynthesis as they are not capable of this function. ● Photosystems can capture solar energy. Plants use chlorophyll to get “excited.” The chlorophyll takes in the sun’s energy to convert it into other energy to use it in photosynthesis. ●They can make oxygen by taking in water and splitting it into oxygen and...
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