Biology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| autotroph | organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
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| heterotroph | organism that obtains energy from the foods it consumes; also called a consumer
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| producer | organism that can capture energy from sunlight and use it to produce food from inorganic compounds; also called an autotroph
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| consumer | organism that relies on other organisms for its energy and food supply; also called heterotroph
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| chlorophyll | principal pigment of plants and other photosynthetic organisms; captures light energy
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| thylakoid | saclike photosynthetic membrane found in chloroplasts
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| stroma | region outside the thylakoid membranes in chloroplasts
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| glycolysis | first step in releasing the energy of glucose, in which a molecule of glucose is broken into two molecules of pyruvic acid
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| fermentation | process by which cells release energy in the absence of oxygen
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| anaerobic | process that does not require oxygen
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| aerobic | process that requires oxygen
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| food chain | series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
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| food web | network of complex interactions formed by feeding relationships among the various organisms in an ecosystem
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| trophic level | step in a food chain or food web
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| ecological pyramid | diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web
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| biomass | total amount of living tissue within a given trophic level
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| nitrogen fixation | process of converting nitrogen gas to ammonia
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| denitrification | conversion of nitrates into nitrogen gas
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Created by:
Batterbee
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