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AP Biology: Cell Structure Flashcards

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

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7288706025organellesmembrane-enclosed structures within a eukaryotic cell0
7288706026cytosola jellylike substance where organelles and other components are found1
7288706027eukaryotic cellCell with a nucleus and membrane bound organelles2
7288706028prokaryotic cellCell with no nucleus nor membrane bound organelles3
7288706029nucleoid regiona non-membrane-enclosed region of the cell where prokaryotic DNA is found4
7288706030cytoplasmthe region in a cell between the cell membrane and nucleus; it contains the cell structures and oganelles5
7288706031plasma membraneThe selective barrier that surrounds a cell; it controls what enters and leaves the cell6
7288706032nucleuschromosome-containing part of a eukaryotic cell7
7288706033nuclear envelopeencloses the nucleus to separate its contents from the cytoplasm8
7288706034nuclear 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
7288706035chromosomestightly coiled structures that carry the genetic information (can be seen during nuclear division)10
7288706036chromatinloosly coiled genetic material that makes up chromosomes, a complex of proteins and DNA11
7288706037nucleoluslocated in the nucleus, makes, synthesizes, and partially assembles ribosomes12
7288706038ribosomesmade of ribosomal RNA and protein, synthesize proteins13
7288706039endomembrane 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
7288706040endoplasmic reticulum (ER)accounts for more than half of total membrane in many eukaryotic cells, continuous with the nuclear envelope15
7288706041smooth ERportion of the endoplasmic reticulum free of ribosomes, synthesize lipids, detoxifies the cell, and regulates calcium levels16
7288706042rough ERportion of the endoplasmic reticulum studded with ribosomes, produce and transport membrane and secretory proteins17
7288706043glycoproteinsproteins with covalently-bonded carbohydrates that play a role in cell to cell interaction18
7288706044transport vesiclesvesicles in transit from one part of the cell to another19
7288706045Golgi apparatusstack of membranes that modifies, sorts, and packages proteins from the endoplasmic reticulum20
7288706046lysosomemembranous sac of hydrolytic enzymes, which the cell uses to digest unwanted materials21
7288706047phagocytosisthe process by which a cell engulfs a solid particle22
7288706048autophagylysosomes break down damaged organelles23
7288706049food vacuolesformed by phagocytosis, pinches off from plasma membrane and encloses a food particle24
7288706050contractile vacuolespump excess water out of the cell to maintain a suitable concentration of ions and molecules in the cell25
7288706051central 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
7288706052mitochondriachemically convert chemical (food) energy into usable ATP energy through cellular respiration27
7288706053chloroplastscontain chlorophyll which help absorb solar energy in order to convert carbon dioxide and water into sugars during photosynthesis28
7288706054cristaeinfoldings in the inner membrane of the mitochondria Cristae are the black folds in the diagram29
7288706055mitochondrial matrixcompartment of the mitochondrion, enclosed by the inner membrane, contains enzymes and substrates for the citric acid cycle30
7288706056plastidsmanufacture and store important chemical compounds used by the cell such as pigments, oils, and starches31
7288706057thylakoidsflattened and interconnected sacs found in chloroplasts. The light dependent stage of photosynthesis occurs on the membranes of these sacs32
7288706058granumstacks of thylakoids33
7288706059stromafluid outside the thylakoids, contains chloroplast DNA, ribosomes, and enzymes. The light independent stage of photosynthesis occurs in this area34
7288706060cytoskeletona network of fibers bracing the cytoplasm35
7288706061microtubuleshollow rods of protein, support the cell and moves organelles within the cell36
7288706062centrosomea region located near the nucleus where micro-tubules grow from; important in cell division37
7288706063centriolescylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division38
7288706064flagellaa long tail-like structure that aids in cell movement39
7288706065ciliaa short hair-like structures that enable movement of cells or movement of materials outside a cell, utilizes a back-and-forth motion40
7288706066microfilamentsthe thinnest part of the cytoskeleton, are used to give shape to the cell and support all of its internal parts41
7288706067actina globular protein that makes up microfilaments42
7288706068pseudopodiacellular extensions that enable a cell to crawl along a surface43
7288706069cytoplasmic streamingthe circular flow of cytoplasm within cells44
7288706070intermediate filamentsdiverse class of cytoskeletal elements that bear tension like microfilaments45
7288706071cell wallextracellular structure specific to plant cells, protects the cell, maintains its shape, and prevents excessive water uptake46
7288706072primary cell walla relatively thin and flexible layer in plant cells, first secreted by a young cell47
7288706073middle lamellaa thin layer between primary walls of adjacent cells that glues them together with pectin48
7288706074secondary cell walla strong and durable matrix in plant cells, often deposited in several laminated layers for cell protection and support49
7288706075extracellular matrixwhere animal tissue cells are embedded, consists of protein and polysaccharides50
7288706076collagenmost common glycoprotein in the ECM, forms strong fibers outside the cells51
7288706077plasmodesmatachannels that perforate cell walls, allow for connections between cells in plants52
7288706078tight junctionsintercellular junction in animal tissues where plasma membranes of neighboring cells are very tightly pressed against each other, bound by specific proteins53
7288706079desmosomesintercellular junction in animal tissues that function like rivets, fastening cells together into strong sheets54
7288706080gap junctionsintercellular junction in animal tissues that provide cytoplasmic channels from one cell to an adjacent cell, similar to plasmodesmata in plants55
11883325660Cell theoryAll known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms.56
11883386430Factor that limits the size of a cell isThe surface area -to Volume ratio57
11883435070What type of microscope would you use to examine the surface details of a cell?58

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