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AP Biology: Chapter 6 Flashcards

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

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6599743619organellesmembrane-enclosed structures within a eukaryotic cell0
6599743620cytosola jellylike substance where organelles and other components are found1
6599743621eukaryotic cellCell with a nucleus and membrane bound organelles2
6599743622prokaryotic cellCell with no nucleus nor membrane bound organelles3
6599743623nucleoid regiona non-membrane-enclosed region of the cell where prokaryotic DNA is found4
6599743624cytoplasmthe region in a cell between the cell membrane and nucleus; it contains the cell structures and oganelles5
6599743625plasma membraneThe selective barrier that surrounds a cell; it controls what enters and leaves the cell6
6599743626nucleuschromosome-containing part of a eukaryotic cell7
6599743627nuclear envelopeencloses the nucleus to separate its contents from the cytoplasm8
6599743628nuclear 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
6599743629chromosomestightly coiled structures that carry the genetic information (can be seen during nuclear division)10
6599743630chromatinloosly coiled genetic material that makes up chromosomes, a complex of proteins and DNA11
6599743631nucleoluslocated in the nucleus, makes, synthesizes, and partially assembles ribosomes12
6599743632ribosomesmade of ribosomal RNA and protein, synthesize proteins13
6599743633endomembrane systemmembranes that divide the cell into organelles such as the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, and the cell membrane.14
6599743634endoplasmic reticulum (ER)accounts for more than half of total membrane in many eukaryotic cells, continuous with the nuclear envelope15
6599743635smooth ERportion of the endoplasmic reticulum free of ribosomes, synthesize lipids, detoxifies the cell, and regulates calcium levels16
6599743636rough ERportion of the endoplasmic reticulum studded with ribosomes, produce and transport membrane and secretory proteins17
6599743637glycoproteinsproteins with covalently-bonded carbohydrates that play a role in cell to cell interaction18
6599743638transport vesiclesvesicles in transit from one part of the cell to another19
6599743639Golgi apparatusstack of membranes that modifies, sorts, and packages proteins from the endoplasmic reticulum20
6599743640lysosomemembranous sac of hydrolytic enzymes, which the cell uses to digest unwanted materials21
6599743641phagocytosisthe process by which a cell engulfs a solid particle22
6599743642autophagylysosomes break down damaged organelles23
6599743643food vacuolesformed by phagocytosis, pinches off from plasma membrane and encloses a food particle24
6599743644contractile vacuolespump excess water out of the cell to maintain a suitable concentration of ions and molecules in the cell25
6599743645central vacuolethe largest organelle in a plant cell. It is surrounded by the tonoplast and functions to hold materials and wastes. It also functions to maintain the proper pressure within plant cells26
6599743646mitochondriachemically convert chemical (food) energy into usable ATP energy through cellular respiration27
6599743647chloroplastscontain chlorophyll which help absorb solar energy in order to convert carbon dioxide and water into sugars during photosynthesis28
6599743648cristaeinfoldings in the inner membrane of the mitochondria29
6599743649mitochondrial matrixcompartment of the mitochondrion, enclosed by the inner membrane, contains enzymes and substrates for the citric acid cycle30
6599743650plastidsmanufacture and store important chemical compounds used by the cell such as pigments, oils, and starches31
6599743651thylakoidsflattened and interconnected sacs found in chloroplasts. The light dependent stage of photosynthesis occurs on the membranes of these sacs32
6599743652granumstacks of thylakoids33
6599743653stromafluid outside the thylakoids, contains chloroplast DNA, ribosomes, and enzymes. The light independent stage of photosynthesis occurs in this area34
6599743654cytoskeletona network of fibers bracing the cytoplasm35
6599743655microtubuleshollow rods of protein, support the cell and moves organelles within the cell36
6599743656centrosomea region located near the nucleus where micro-tubules grow from; important in cell division37
6599743657centriolescylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division38
6599743658flagellaa long tail-like structure that aids in cell movement39
6599743659ciliaa short hair-like structures that enable movement of cells or movement of materials outside a cell, utilizes a back-and-forth motion40
6599743660microfilamentsthe thinnest part of the cytoskeleton, are used to give shape to the cell and support all of its internal parts41
6599743661actina globular protein that makes up microfilaments42
6599743662pseudopodiacellular extensions that enable a cell to crawl along a surface43
6599743663cytoplasmic streamingthe circular flow of cytoplasm within cells44
6599743664intermediate filamentsdiverse class of cytoskeletal elements that bear tension like microfilaments45
6599743665cell wallextracellular structure specific to plant cells, protects the cell, maintains its shape, and prevents excessive water uptake46
6599743666primary cell walla relatively thin and flexible layer in plant cells, first secreted by a young cell47
6599743667middle lamellaa thin layer between primary walls of adjacent cells that glues them together with pectin48
6599743668secondary cell walla strong and durable matrix in plant cells, often deposited in several laminated layers for cell protection and support49
6599743669extracellular matrixwhere animal tissue cells are embedded, consists of protein and polysaccharides50
6599743670collagenmost common glycoprotein in the ECM, forms strong fibers outside the cells51
6599743671plasmodesmatachannels that perforate cell walls, allow for connections between cells in plants52
6599743672tight junctionsintercellular junction in animal tissues where plasma membranes of neighboring cells are very tightly pressed against each other, bound by specific proteins53
6599743673desmosomesintercellular junction in animal tissues that function like rivets, fastening cells together into strong sheets54
6599743674gap junctionsintercellular junction in animal tissues that provide cytoplasmic channels from one cell to an adjacent cell, similar to plasmodesmata in plants55

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