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24 Cards in this Set
- Front
- Back
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Cell Membrane
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The selectively permeable outer boundary of a cell consisting of a pospholipid bilayer embedded with proteins; plasma membrane or cytoplasmic membrane
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Organelles
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A part of a cell that performs a specialized function
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Isotonic
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A solution with the same osmotic pressure as the solution (usually body fluids) with which it is compared
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Enzyme
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A protein that catalyzes a specofoc biochemical reaction
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Energy
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An ability to move something and thus do work
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Lysosome
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Organelle that contains digestive enzymes
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Endocytosis
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Process by which a cell membrane envelops a substance and draws it into the cell in a vesicle
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Stem Cell
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An undifferentiated cell that can divide to yield two daughter stem cells or a stem cell and a progentior cell
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DNA
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Contais deoxyribose and forms a double polynucleotide chain. The two chains are held together by hydrogen bonds.
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Translation
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Assembly of an amino acid chain according to the sequence of base triplets in an mRNA molecule
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Coenzyme
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A nonprotein organic molecule required for the activity of a particular enzyme
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Selectively Permeable
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A membrane that allows some molecules through but not others
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Hypertonic
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A solution with a greater osmotic pressure than the solution with which it is compared (usually body fluids)
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Anabolism
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Synthesis of larger molecules from smaller ones
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Endoplasmic Reticulum
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Organelle composed of a system of connected membranous tubules and vesicles along with protein is synthesized
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Exocytosis
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Transport of substances out of a cell in membrane bounded vesicles
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Interphase
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Period between two cell division when a cell metabolizes and prepares to divide
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Genes
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Portion of a DNA molecule that encodes information to synthesize a protein; a control sequence ; or tRNA or rRNA; the unit of inheritance
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Codon
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Set of three nucleotides of a messenger RNA molecule corresponding to a particular amino acid
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Hypotonic
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A solution with a lower osmotic pressure than the solution with which it is compared
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Catabolism
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Breakdown of large molecules into smaller ones
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Nucleus
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A cellular organelle enclosed by a double layered, pourous membrane and containing DNA
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Golgi Apparatus
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An organelle that prepares cellular products for secretion
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Nucleolus
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A small structure within the cell nucleus that conatins RNA and proteins
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