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Chapter 6 Terms AP Biology Flashcards

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5084278474nucleoluslocated in the nucleus, makes, synthesizes, and partially assembles ribosomes (rRNA is synthesized from instructions from DNA, proteins imported from cytoplasm are assembled with rRNA into subunits of ribosomes)0
5084334501thylakoida flattened, membranous sac inside a chloroplast, often exist in stacks called grana that are interconnected, membranes contain molecular "machinery" used to convert light energy to chemical energy1
5084369445middle lamellaIn plants, a thin layer of adhesive extracellular material, primarily pectin, found between the primary walls of adjacent young cells2
5084468097ribosomecomplexes made of ribosomal RNA and protein, are the cellular components that carry out protein synthesis3
5084499631secondary cell wallwall between the plasma membrane and the primary wall, often deposited in several laminated layers, strong and durable matrix that helps with cell protection and support4
5084580767organellemembrane-enclosed structures with a specialized function, suspended in the cytosol of eukaryotic cells5
5084621519endomembrane systemDifferent membranes of eukaryotic cell are part of this system: includes the nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, various kind of vesicles and vacuoles, and the plasma membrane. Carries out tasks including protein synthesis, transport of proteins into membranes and organelles or out of the cell, metabolism and movement of lipids, and detoxification of poisons.6
5084668036stromafluid outside of thylakoids which contains the chloroplast DNA and ribosomes as well as many enzymes7
5084689623extracellular matrix (ECM)meshwork surrounding animal cells, ingredients include glycoproteins (collagen) and other carbohydrate-containing molecules secreted and synthesized by the cells.8
5084727724endoplasmic reticulum (ER)extensive network of membranes that accounts for more than half the total membrane in many eukaryotic cells, continuous with the outer nuclear membrane and composed of ribosome-studded and ribosome-free regions9
5084782002cytoskeletona network of fibers extending throughout/bracing the cytoplasm10
5084801463collagenmost common glycoprotein in ECM, forms strong fibers outside the cell, found extensively in connective tissue and bone, most abundant protein in animal kingdom11
5084847389smooth ERportion of ER free of ribosomes, processes include synthesis of lipids, metabolism of carbohydrates, detoxification of drugs and poisons, and storage of calcium ions12
5084891778microtubulesin eukaryotic cells, hollow rods constructed from a globular protein called tubulin, shapes and supports the cell, "compression-resisting girders of cytoskeleton", serve as tracks along which organelles equipped with motor proteins can move.13
5087090633proteoglycana large molecule consisting of a small core protein with many carbohydrate chains attached, found in extracelluar matrix of animal cells, the woven out network where collagen fibers are embedded14
5087180581rough ERportion of ER with attached ribosomes, membrane factory for the cell, produces secretory proteins, keeps those separate from proteins produced by free ribosomes15
5087228940microfilaments (actin filaments)thin solid rods, built from molecules of actin, role in cytoskeleton (thinnest part) is to bear tension (pulling forces) on the cell and create and support the 3D network of cell and all of its internal parts16
5087293503fibronectinECM glycoprotein that allows cells to be attached to the ECM17
5087342940glycoproteinproteins with carbohydrates covalently bonded to them that play a role in cell to cell interaction18
5087372699integrincell-surface receptor protein built into the plasma membrane, in position to transmit signals between ECM and cytoskeleton and thus integrating changes occurring outside and inside the cell19
5087399393intermediate filamentslarger than microfilaments and smaller than microtubules, only in cells of some animals (vertebrates), specialized for bearing tension with cytoskeleton, constructed from particular family of proteins from (keratins), more permanent fixture20
5087508424centrosomewhere microtubules grow out of (often located near nucleus), has a pair of centrioles21
5087535870centrioleswithin a centrosome, composed of 9 sets of triplet microtubules arranged in a ring22
5087562710plasmodesmataan open channel through the cell wall that connects the cytoplasm of adjacent plant cells, allowing water, small solutes, and some larger molecules to pass between cells23
5091821283cytoplasminterior of either type of cell, in eukaryotic cells: region between the nucleus and the plasma membrane, in prokaryotic cells: within the cell membrane, organized24
5091867130golgi apparatusstack of membranes that modifies, sorts, and packages proteins from the endoplasmic reticulum25
5091910335tight junctionsintercellular junction where the plasma membranes of neighboring cells are tightly pressed against each other and bound together by a specific protein, establish a barrier that prevents leakage of extracellular fluid, especially common in epithelial tissue26
5091962829prokaryotic cellcells with no nucleus or membrane bound organelles, plant cell27
5091981078phagocytosishow eukaryotic cells eat by engulfing smaller organisms or food particles,28
5092007691flagellamicrotubule-containing extensions that project from some cells, tail-like structure29
5092027628desmosomesintercellular junction that functions like a rivet, fastening cells together into strong sheets, intermediate filaments made of keratin proteins anchor desmosomes, attach muscle to muscle30
5092050487vacuolelarge vesicles from ER and golgi apparatus, transports things throughout the cell, types: food, contractile, and central31
5092074528ciliamicrotubule-containing extensions that project from some cells, many short appendages32
5092091859gap junctionsprovide cytoplasmic channels from one cell to an adjacent cell, consists of membrane proteins that surround a pore through which ions, sugars, and amino acids may pass, necessary for communication between cells33
5092108897eukaryotic cellcell with a nucleus and membrane bound organelles, animal cell34
5092120139contractile vacuolevacuole that pumps excess water out of the cell, thereby maintaining a suitable concentration of ions and molecules in the cell35
5092141851basal bodya eukaryotic cell structure consisting of 9 sets of triplet microtubules, may organize the microtubule assembly of a cilium or flagellum and is structurally very similar to a centriole.36
5092187751central vacuolein mature plant cells, largest organelle, solution inside called "cell sap" (the plant cell's main repository of inorganic ions), plays major role in growth of plant cells, holds materials and wastes37
5092210853dyneinlarge motor proteins that are attached along each outer microtubule doublet, produce the bending movements of flagella and cilia38
5092236606cytosoljellylike substance where organelles and other component are suspended39
5092256167peroxisomespecialized metabolic compartment bounded by a single membrane, contain enzymes that remove H atoms from various substrates and transfer them to O2 (making H2O2)40
5092282920actina globular protein that makes up microfilaments41
5092292508plasma membraneat boundary of every cell, selective barrier that allows passage of enough oxygen, nutrients, and wastes to service the entire cell, controls what enters/leaves the cell42
5092302026mitochondriaconverts energy to forms that cells can use for work, the site of cellular respiration, chemically convert chemical (food) energy into usable ATP energy through cellular respiration43
5092314328chloroplastconvert energy to forms that cells can use for work, site of photosynthesis44
5092320388myosinprotein that makes up thousands of actin filaments and thicker filaments, cause contraction of muscles45
5092337959nucleuscontains most of genes in eukaryotic cell, contains chromosomes46
5092348811pseudopodiacellular extensions that enable a cell to crawl along a surface47
5092357950nuclear laminaa netlike array of protein filaments that maintains the shape of the nucleus by mechanically supporting the nuclear envelope, lines the nuclear side of the nuclear envelope48
5092372909cristaeinfoldings in the inner membrane of the mitochondria49
5092379727chromatinloosly coiled genetic material that makes up chromosomes, a complex of proteins and DNA50
5092394512mitochondrial matrixcompartment of the mitochondrion, enclosed by the inner membrane, contains enzymes and mitochondrial DNA and substrates for the citric acid cycle, enzymes help with cellular respiration and making ATP51
5092409923cell wallextracellular structure of plant cells, protects cell, maintains shape, and prevents excess uptake of water52
5092417515chromosome plastidmanufacture and store important chemical compounds used by the cell such as pigments, oils, and starches53

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