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AP Biology: Cell Structures Flashcards

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

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7336083287organellesmembrane-enclosed structures within a eukaryotic cell0
7336083288cytosola jellylike substance where organelles and other components are found1
7336083289eukaryotic cellCell with a nucleus and membrane bound organelles2
7336083290prokaryotic cellCell with no nucleus nor membrane bound organelles3
7336083291nucleoid regiona non-membrane-enclosed region of the cell where prokaryotic DNA is found4
7336083292cytoplasmthe region in a cell between the cell membrane and nucleus; it contains the cell structures and oganelles5
7336083293plasma membraneThe selective barrier that surrounds a cell; it controls what enters and leaves the cell6
7336083294nucleuschromosome-containing part of a eukaryotic cell7
7336083295nuclear envelopeencloses the nucleus to separate its contents from the cytoplasm8
7336083297chromosomestightly coiled structures that carry the genetic information (can be seen during nuclear division)9
7336083298chromatinloosly coiled genetic material that makes up chromosomes, a complex of proteins and DNA10
7336083299nucleoluslocated in the nucleus, makes, synthesizes, and partially assembles ribosomes11
7336083300ribosomesmade of ribosomal RNA and protein, synthesize proteins12
7336083301endomembrane systemmembranes that divide the cell into organelles such as the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, and the cell membrane.13
7336083302endoplasmic reticulum (ER)accounts for more than half of total membrane in many eukaryotic cells, continuous with the nuclear envelope14
7336083303smooth ERportion of the endoplasmic reticulum free of ribosomes, synthesize lipids, detoxifies the cell, and regulates calcium levels15
7336083304rough ERportion of the endoplasmic reticulum studded with ribosomes, produce and transport membrane and secretory proteins16
7336083305glycoproteinsproteins with covalently-bonded carbohydrates that play a role in cell to cell interaction17
7336083306transport vesiclesvesicles in transit from one part of the cell to another18
7336083307Golgi apparatusstack of membranes that modifies, sorts, and packages proteins from the endoplasmic reticulum19
7336083308lysosomemembranous sac of hydrolytic enzymes, which the cell uses to digest unwanted materials20
7336083309phagocytosisthe process by which a cell engulfs a solid particle21
7336083310autophagylysosomes break down damaged organelles22
7336083311food vacuolesformed by phagocytosis, pinches off from plasma membrane and encloses a food particle23
7336083312contractile vacuolespump excess water out of the cell to maintain a suitable concentration of ions and molecules in the cell24
7336083313central 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 cells25
7336083314mitochondriachemically convert chemical (food) energy into usable ATP energy through cellular respiration26
7336083315chloroplastscontain chlorophyll which help absorb solar energy in order to convert carbon dioxide and water into sugars during photosynthesis27
7336083316cristaeinfoldings in the inner membrane of the mitochondria28
7336083317mitochondrial matrixcompartment of the mitochondrion, enclosed by the inner membrane, contains enzymes and substrates for the citric acid cycle29
7336083318plastidsmanufacture and store important chemical compounds used by the cell such as pigments, oils, and starches30
7336083319thylakoidsflattened and interconnected sacs found in chloroplasts. The light dependent stage of photosynthesis occurs on the membranes of these sacs31
7336083320granumstacks of thylakoids32
7336083321stromafluid outside the thylakoids, contains chloroplast DNA, ribosomes, and enzymes. The light independent stage of photosynthesis occurs in this area33
7336083322cytoskeletona network of fibers bracing the cytoplasm34
7336083323microtubuleshollow rods of protein, support the cell and moves organelles within the cell35
7336083324centrosomea region located near the nucleus where micro-tubules grow from; important in cell division36
7336083325centriolescylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division37
7336083326flagellaa long tail-like structure that aids in cell movement38
7336083327ciliaa short hair-like structures that enable movement of cells or movement of materials outside a cell, utilizes a back-and-forth motion39
7336083328microfilamentsthe thinnest part of the cytoskeleton, are used to give shape to the cell and support all of its internal parts40
7336083333cell wallextracellular structure specific to plant cells, protects the cell, maintains its shape, and prevents excessive water uptake41
7336083337extracellular matrixwhere animal tissue cells are embedded, consists of protein and polysaccharides42

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