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AP BIOLOGY CHAPTER 6: A TOUR OF THE CELL Flashcards

Cell structure, function, organelles, cellular respiration, etc. Chapter 6 of 8th edition Biology (Campbell & Reece).

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493570143Light microscopesMicroscopes that focus light beams by using glass lenses1
493570144Resolution & Specimen of Light MicroscopesMicroscopes that don't have high resolutions, but are used to study living specimen2
493570145Electron microscopes (EM)Microscopes that focus electron beams using electromagnets3
493570146Resolution & Specimen of EMHigh resolutions which can only be used on dead specimen4
493570147TEMsTransmission electron microscopes; used to study internal cell structures by making thin slices5
493570148SEMsScanning electron microscopes; useful for studying surface structures6
4935701494 things that all cells havePlasma membranes, cytoplasm, chromatin, & ribosomes7
493570150Major difference between prokaryotic & eukaryotic cellsNucleoid & nucleus8
493570151As a cell increases its size, ____________.Its volume increases faster than its surface area9
493570152Cell membraneFunctions as a selective barrier that allows the passage of oxygen, nutrients, and wastes for the whole volume of the cell10
493570153The general structure of a biological structureNucleus11
493570154Where genes are located in the cellNucleus, mitochondria, and chloroplast12
493570155Double membrane that separates nucleus from cytoplasmNuclear envelope13
493570156Within the nucleus, discrete units that organize DNA and associated proteins & carry genesChromosomes14
493570157Fibrous material that is a complex of proteins & DNAChromatin15
493570158A region of densely stained fibers and granules adjoining chromatin (located in the nucleus)Nucleolus16
493570159RibosomesOrganelles that carry out protein synthesis; contain rRNA & protein17
493570160Where free ribosomes are locatedCytoplasm18
493570161What free ribosomes makeIn-house proteins for the cell19
493570162Where bound ribosomes are locatedRough endoplasmic reticulum20
493570163what bound ribosomes makeExport proteins & membranes21
4935701646 parts of the endomembrane systemNuclear membrane, ER, Golgi body, lysosomes, vacuoles, & cell membrane22
493570165Smooth ERno ribosomes; creates lipids23
493570166Rough ERribosomes; creates proteins24
493570167Golgi bodycenter for packaging & transporting things25
493570168VesiclesWhere the Golgi sorts and packages materials26
493570169Lysosomemembrane-bound sac of hydrolytic enzymes that an animal cell uses to digest macromolecules27
493570170ApoptosisProgrammed cell death28
493570171Vacuolesmembrane-bound sacs that store food & water in cells29
493570172Nuclear membraneA highly-porous membrane that separates the nucleus from the cytoplasm30
493570173Endoplasmic reticuluma cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another31
493570174Cell membranethin, flexible barrier around a cell; regulates what enters and leaves the cell32
493570175TonoplastLarge central vacuole located in mature plant cells33
493570176Mitochondriasites of cellular respiration, generating ATP from the catabolism of sugars, fats, and other fuels int he presence of oxygen34
493570177ChloroplastsFound in plants and algae; sites of photosynthesis: convert solar energy to chemical energy and synthesize new organic compounds such as sugars from CO2 & H2O35
498905275Mitochondria and ChloroplastsNot part of the endomembrane system36
498905276Reasons why M & C are not part of the ES-2 membranes -have ribosomes/circular DNA attached to inner membrane -creates its own proteins -semi-autonomous organelles37
498939420AmyloplastsColorless plastids that store starch in roots and tubers (like potatoes)38
498939421ChromoplastsStore pigments for fruits (like red peppers) and flowers39
498939422ChloroplastsContain the green pigment chlorophyll that functions in the photosynthetic production of sugar40
498939423StromaFluid-filled space inside the innermost membrane that contains DNA, ribosomes, & enzymes41
498939424ThylakoidsFloating flattened membranous sacs that play a critical role in converting light to chemical energy42
498939425GranaThylakoids stacked like poker chips43
498939426PeroxisomeSingle membrane; contains an enzyme that converts H2O2 to H2O44
498939427What peroxisomes break downfatty acids to smaller molecules that are transported to mitochondria as fuel for cellular respiration45
498939428Cytoskeletonnetwork of fibers that organizes structures and activities in the cell46
4989394293 things the cytoskeleton providesSupport, cell shape, and anchorage47
4989394303 main types of fibers composing the cytoskeleton-Microtubules -Microfilaments -Intermediate filaments48
498939431DyneinIn cilia and flagella, a large contractile protein extending from one microtubule doublet to the adjacent doublet. ATP hydrolysis drives changes in dynein shape that lead to bending of cilia and flagella.49
4989394329+2 patternnine doublets of microtubules, the members of each pair sharing walls, and arranged in a ring. in the center of the ring are two straight microtubules. found in cilia and flagella50
498939433Intercellular junctionshelp integrate cells into higher levels of structure and function51
498939434PlasmodesmataChannels allowing cytosol to pass between plant cells52
498939435Animal cells' 3 main types of intercellular links-tight junctions -desmosomes -gap junctions53
498939436Tight junctionsMembranes of adjacent cells are fused, forming continuous belts around cells; prevents leakage of extracellular fluid54
498939437Desmosome(anchoring junctions) fasten cells together into strong sheets, much like rivets55
498939438Gap junctions(communicating junctions) provide cytoplasmic channels between adjacent cells (similar to plasmodesmata in plant cells)56

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