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AP Biology Cell and Organelles Flashcards

Vocabulary words from the AP Edition of Campbell Biology, Chapter 6.

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7730152202organellesmembrane-enclosed structures within a eukaryotic cell0
7730152203cytosola jellylike substance, minus the organelles suspended in it1
7730152204eukaryotic cellCell with a nucleus and membrane bound organelles2
7730152205prokaryotic cellCell with no nucleus nor membrane bound organelles3
7730152206nucleoid regiona non-membrane-enclosed region of the cell where prokaryotic DNA is found4
7730152207cytoplasmthe region in a cell between the cell membrane and nucleus; it contains the cell structures and organelles5
7730152208plasma membraneThe selective barrier that surrounds a cell; it controls what enters and leaves the cell6
7730152209nucleuschromosome-containing part of a eukaryotic cell7
7730152210nuclear envelopeencloses the nucleus to separate its contents from the cytoplasm8
7730152211nuclear 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 envelope9
7730152212chromosomestightly coiled structures that carry the genetic information (can be seen during nuclear division)10
7730152213chromatinloosly coiled genetic material that makes up chromosomes, a complex of proteins and DNA11
7730152214nucleoluslocated in the nucleus, makes, synthesizes, and partially assembles ribosomes12
7730152215ribosomesmade of ribosomal RNA and protein, synthesize proteins13
7730152217endoplasmic reticulum (ER)accounts for more than half of total membrane in many eukaryotic cells, continuous with the nuclear envelope14
7730152218smooth ERportion of the endoplasmic reticulum free of ribosomes, synthesize lipids, detoxifies the cell, and regulates calcium levels15
7730152219rough ERportion of the endoplasmic reticulum studded with ribosomes, produce and transport membrane and secretory proteins16
7730152220glycoproteinsproteins with covalently-bonded carbohydrates that play a role in cell to cell interaction within the ECM17
7730152221transport vesiclesvesicles in transit from one part of the cell to another18
7730152222Golgi apparatusstack of membranes that modifies, sorts, and packages proteins from the endoplasmic reticulum19
7730152223lysosomemembranous sac of hydrolytic enzymes, which the cell uses to digest unwanted materials20
7730152224phagocytosisthe process by which a cell engulfs a solid particle from its environment21
7730152225autophagylysosomes break down damaged organelles within the cell22
7730152226food vacuolesformed by phagocytosis, pinches off from plasma membrane and encloses a food particle within the cell23
7730152227contractile vacuolespump excess water out of the cell to maintain a suitable concentration of ions and molecules in the cell24
7730152228central vacuolethe largest organelle in a plant cell. Functions to hold materials and wastes. It also functions to maintain the proper pressure within plant cells25
7730152229mitochondriachemically convert chemical (food) energy into usable ATP energy through cellular respiration26
7730152230chloroplastscontain chlorophyll which help absorb solar energy in order to convert carbon dioxide and water into sugars during photosynthesis27
7730152231cristaeinfoldings in the inner membrane of the mitochondria28
7730152232mitochondrial matrixcompartment of the mitochondrion, enclosed by the inner membrane, contains enzymes and substrates for the citric acid cycle29
7730152233plastidsmanufacture and store important chemical compounds used by the cell such as pigments, oils, and starches30
7730152234thylakoidsflattened and interconnected sacs found in chloroplasts. The light dependent stage of photosynthesis occurs on the membranes of these sacs31
7730152235granumstacks of thylakoids32
7730152236stromafluid outside the thylakoids, contains chloroplast DNA, ribosomes, and enzymes. The light independent stage of photosynthesis occurs in this area33
7730152237cytoskeletona network of fibers bracing the cytoplasm34
7730152238microtubuleslarge, hollow rods of tubulin protein, support the cell and moves organelles within the cell; move chromosomes during cell division35
7730152239centrosomea region located near the nucleus where micro-tubules grow from; important in cell division36
7730152240centriolescylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division37
7730152241flagellaa long tail-like structure that aids in cell movement38
7730152242ciliaa short hair-like structures that enable movement of cells or movement of materials outside a cell, utilizes a back-and-forth motion39
7730152243microfilamentsthe thinnest part of the cytoskeleton, are used to give shape to the cell and support all of its internal parts; composed of two intertwined strands of actin40
7730152244actina globular protein that makes up microfilaments41
7730152245pseudopodiacellular extensions that enable a cell to crawl along a surface42
7730152246cytoplasmic streamingthe circular flow of cytoplasm within cells43
7730152247intermediate filamentskeratin proteins are coiled into cables that maintain cell shape, anchor the nucleus, and helps form the nuclear lamina44
7730152248cell wallextracellular structure specific to plant cells, protects the cell, maintains its shape, and prevents excessive water uptake45
7730152249primary cell walla relatively thin and flexible layer in plant cells, first secreted by a young cell46
7730152250middle lamellaa thin layer between primary walls of adjacent cells that glues them together with pectin47
7730152251secondary cell walla strong and durable matrix in plant cells, often deposited in several laminated layers for cell protection and support48
7730152252extracellular matrixwhere animal tissue cells are embedded, consists of protein and polysaccharides49
7730152253collagenmost common glycoprotein in the ECM, forms strong fibers outside the cells50
7730152254plasmodesmatachannels that perforate cell walls, allow for connections between cells in plants51
7730152255tight junctionsintercellular junction in animal tissues where plasma membranes of neighboring cells are very tightly pressed against each other, bound by specific proteins52
7730152256desmosomesintercellular junction in animal tissues that function like rivets, fastening cells together into strong sheets53
7730152257gap junctionsintercellular junction in animal tissues that provide cytoplasmic channels from one cell to an adjacent cell, similar to plasmodesmata in plants54
7730534749peroxisomemetabolic functions that produces hydrogen peroxide as a by product and converts it to water55
7730564214free ribosomesnot attached to the ER; proteins that are produced remain within the cytosol; these organelles tend to clump together into polyribosomal groups56
7730582293bound ribosomesattached to the ER; produces proteins that are secretory proteins and will be incorporated with the cell's membrane or bound within a transport vesicle57
7730691185motor proteinsThe interaction of the cytoskeleton and these proteins allow organelles to move within the cell58

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