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17 Cards in this Set
- Front
- Back
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centriole
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found in the cells of animals and some algae and fungi;two pairs of centrioles play an important role in cell reproduction.
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chloroplast
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double-walled organelle found in plants and some algae;functions in photosynthesis to trap light energy.
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chromatin
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dense mass of material within the nucleus that is composed of individual chromosomes.
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chromosome
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structure that carries the genes;composed of proteins and DNA.
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cilia
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flexible projections extending outward from a cell that enable locomotion by whiplike motion;Paramecium move by the motion of cilia.
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cytoplasm
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substance contained by liveing cells that is composed of a complex mixture of enzymes,sugars,and amino acids;these substances are constantly involved in chemical reactions.
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endoplasmic reticulum
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network of interconnected structures found in all eukaryotes;functions include intracellular transport of proteins and the breakdown of harmful substances.
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eukaryote
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cell containing a nuclear membrane and a membrane-bound nucleus;the vast majority of living organisms(for example,plants,animals,protists,and fungi)are eukaryotic.
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flagella
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long,whiplike strands extending from a cell that enable cell locomotion.
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golgi body
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flattened,saclike organelle that functions as a processing,packaging,and delivery system in eukaryotes.
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lysosome
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organelle containing digestive enzymes that break down food and digest worn out cell parts.
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metamorphosis
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various patterns of development that involve a series of changes in body structure-for example,some insects have three stages of change:egg,nymph,and adult
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microfilament
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structure of the cytoskeleton in eukaryotes;composed of actin and myosin,it provides structural support and assists cell movement(for example,muscle movement).
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microtubule
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structure of the cytoskeleton in eukaryotes that helps certain organelles move within the cell.
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mitochondria
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organelles,bound by a double membrane,found in all eukarytes;mitochondria break down organic molecules to release energy for cell reactions.
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nucleoli
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prominent bodies found in the nucleus of eukaryotes;the site of RNA synthesis.
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nucleus
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control area of eukaryotic cells;contains chromatin and a nucleolus.
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