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Chapter 6

Photosynthesis

QuestionAnswer
autotrophs use energy from sunlight or from chemical bonds in inorganic substances to make organic compounds
photosynthesis autotrophs use this process to convert light energy from the sun into chemical energy in the from of organic compounds, primarily caerbohydrates
heterotrophs Animals and other organisms that must get energy from food instead of directly from sunlight or inorganic substances
light reactions the first stage of photosynthesis and it requires light to happen
chloroplast an organelle found in plant and algae cells where photosynthesis occurs
thylakoids a membrane system found within chloroplasts that contains the compnenets for photosynthesis
grana / granum a stack of thylakoids in a chloroplast
stroma in plants, the solution that surrounds the thylakoids in a chloroplast
pigments compounds that absorb light
chlorophylls a green pigment that is present in most plant cells, that gives plants their characterisic green color, and that reacts with sunlight, carbon dioside, and water to form carbohydrates
carotenoids a class of pigments that are present mostly in plants and that aid in photosynthesis
electron transport chain transfer electrons from one molecule to the next
chemiosmosis relies on a concentration gradient of protons across the thylakoid membrane
Calvin cycle is a series of enzyme-assisted chemical reactions that produces a three-carbon sugar. occurs within the stroma of the chloroplast
carbon fixation carbon atoms from CO2 in the atmosphere are bonded, or "fixed," into organic compounds
Created by: ebelingj14
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