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Anatomy Unit 3 Vocab

Unit 3 Vocabulary--Cantley

TermDefinition
Cell Membrane The selectively permeable outer boundary of a cell consisting of a phospholipid bilayer embedded with proteins.
Nucleus Cellular organelle enclosed by double layer porous membrane and containing DNA.
Organelles A structure in a cell that has specialized functions.
Selective Permeability Membrane that allows some types of molecules through but not others: Semipermeable.
Cytoskeleton A cells framework of protein filaments and tubules.
Endoplasmic Reticulum Organelle composed of a network of connected membranous tubules and vesicles.
Ribosome Organelle composed of RNA and protein that is structural support for protein synthesis.
Golgi Apparatus Organelle that prepares and modifies cellular products for secretion.
Mitochondria Organelle housing enzymes that catalyze the aerobic reactions of cellular respiration.
Cilia Microscopic hair like processes on the exposed surface of certain epithelial cells.
Flagella Relatively long, motile process that extends from the surface of a sperm cell.
Vesicles Membranous cytoplasmic sac formed by an infolding of the cell membrane or pinching off of membranes within the cell.
Nucleolus Small structure in the cells nucleus that contains RNA and proteins.
Diffusion Random movement of molecules from a region of higher concentration to a region of lower concentration.
Osmosis Movement of water through a semipermeable membrane toward a concentration of an impermeant solute.
Isotonic Solution with the same osmotic pressure as the solution ( usually body fluids) to which it is compared.
Hypertonic Solution with a greater osmotic pressure that the solution (usually a body fluid) to which it is compared.
Hypotonic Solution with a lower osmotic pressure than the solution ( usually a body fluid) to which it is compared.
Active Transport Process that requires energy and a carrier molecule to move a substance across a cell membrane against the concentration. gradient.
Passive Transport Processes that do not require energy to move a substance across a cell membrane.
Endocytosis Process by which a cells membrane envelops a substance and draws it into the cell in a vesicle.
Exocytosis Transport of a substance out of a cell in membrane bound vesicle.
Created by: NatalieL06
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