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the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions.

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the reaction which occurs as the first phase of photosynthesis, in which energy in the form of light is absorbed and converted to chemical energy in the form of ATP.

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the cycle of chemical reactions performed by plants to “fix” carbon from CO2 into three-carbon sugars

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a method of carbon fixation evolved by some plants in dry circumstances

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plants which cycle carbon dioxide to 4-carbon sugar compounds in order to enter the C3 or the Calvin cycle

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a diatomic molecule that is composed of two oxygen atoms held together by a covalent bond

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the main type of sugar in the blood and is the major source of energy for the body's cells.

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a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

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a heavy colorless gas that is formed by burning fuels, by the breakdown or burning of animal and plant matter, and by the act of breathing and that is absorbed from the air by plants in photosynthesis

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a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.

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the natural coloring matter of animal or plant tissue.

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the supportive tissue of an epithelial organ, tumor, gonad, etc., consisting of connective tissues and blood vessels.

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the stacks of thylakoids embedded in the stroma of a chloroplast

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each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.

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(in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.

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a compound consisting of an adenosine molecule bonded to three phosphate groups, present in all living tissue

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an organism deriving its nutritional requirements from complex organic substances.

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an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

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refers to the study of energy and energy transfer involving physical matter.

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the process by which green plants and certain other organisms transform light energy into chemical energy

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energy is defined as the ability to do work