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AP Biology Chapter 6 Flashcards

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7689697067light microscopeto magnify the image to see the nucleus and the cell membrane; the other organelles are too small to be seen0
7689774874magnificationthe enlargement of the specimen1
7689783354electron microscopebombards the specimen with electrons to see the cells organelles briefly2
7689793440resolutionthe clarity of the microscope3
7689805788prokaryotes-bacteria and archaea -no membrane or nucleus4
7736981394nucleolid-where DNA is concentrated -seen as a darkened spot inside the cell -not separated from cytosol5
7737026327eukaryotes-has a true nucleus with a nuclear envelope -is larger than prokaryote6
7737316689organellesinternal structures of the cell7
7737349893cytoplasmthe space between the nucleus and the cell membrane8
7737816143cytosol-the semi-fluid portion of the cytoplasm -made up of 80% water with suspended particles9
7737838095plasma membraneallows oxygen and nutrients in, and lets waste out (semi permeable) -made of phospholipids and proteins -has hydrophilic heads and 2 hydrophobic tails10
7737870692nuclear envelope-double membrane surrounding the nucleus -is perforated for RNA -the inner and outer membrane is fused at the pores11
7737889966nuclear laminaa fiber network that surrounds the nucleus and helps maintain its shape12
7737308005chromosome-found in the nucleus -help organize DNA -made of chromatin13
7737962114chromatinprotein that makes chromosomes14
7738286544ribosomes-made of ribosomal RNA protein -they make proteins15
7738341392bound ribosomesattached to the nucleus of the ER16
7738394359free ribosomes-suspended in the cytoplasm -makes the most proteins17
7738476445endoplasmic reticulumthere are two types: smooth and rough18
7738485333smooth ER-metabolism of carbohydrates -detoxification of poisons -synthesis of lipids, phospholipids, steroids, and sex hormones19
7738505523rough (transitional) ERsynthesis of glycoproteins and secretory proteins20
7738541048secretory proteins-(in rough ER) wraps the protein in a membrane vessel -the vessel is plasma membrane and used for transport21
7738564036golgi apparatus (body)-transport vessel from the ER -works as a factory: it packages and ships -made of flattened membrane -has Cis and Trans22
7738590465cis-the top near the ER (the closest to it) -this is where material will enter the golgi23
7738603729trans-this is the bottom of the ER (opposite end) -the farthest from it -packages vessels of plasma membrane leave from here24
7738619511lysosomes-cell defense system -works by engulfing to break down and recycle material or waste -uses hydrologic enzymes -used by hydrolysis to digest macromolecules -can hydrolyze proteins, polysaccharides fats, and nucleic acids -made by the rough ER -carry out phagocytosis25
7738773211vacuolesempty membrane bound sacs26
7738778093food vacuoleuses phagocytosis to hold food and nutrients27
7738793475contractile vacuoles-pumps out excess water out of the cell -provides a form of movement for some cells28
7738809783central vacuole-a large vacuole found in only plants -has tonoplasts -formed by smaller vacuoles produced by the ER and the golgi -can hold a reserve of proteins -can force the cell to grow by taking in water29
7738869662tonoplastsmembrane that surrounds the central vacuole30
7738896075mitochondria-performs cellular respiration -generates ATP by using sugars and fats -found in eukaryotic cells -the amount of mitochondria is based on the cells demand for energy31
7738929971membrane of mitochondria-has two layers of phospholipids with proteins embedded in them -outer membrane is smooth -inner has folds called CRISTAE32
7738953066cristae-increases the surface area -aids in the productivity of cellular respiration -increases the production of ATP33
7738976950mitochondria matrixcontains enzymes, ribosomes, and mitochondrial DNA34
7738992881chloroplasts-contains plastids (for storing starch) -chlorophyll (pigmentation) -photosynthetic organelles35
7739005181thylakoidsflattened membrane in the chloroplasts36
7739021000granum/granastack of thylakoids37
7739040670amyloplastscolorless (chlorophyll) plastid38
7739058382chromoplastsyellow and orange (chlorophyll) plastid39
7739083233peroxisomes-use oxidation to produce peroxide -detoxify alcohol40
7739107476cytoskeletonthe network if fibers extending throughout the cytoplasm that works to -give mechanical support -maintain shape -provide locomotion -separate chromosomes in mitosis and meioisis -holds cell together -involved in cell reproduction and muscle movements41
7739137312microfilaments(of the cytoskeleton) -made of monomers; are polymers -forms a band beneath the plasma membrane which provides mechanical strength -generates cytoplasmic streaming and locomotion -provides a force of muscular contractions42
7739178297intermediate filaments4 types: 1) keratin: found in epithelial cells, hair, and nails 2) nuclear laminas: forms a meshwork that stabilizes 3) neurofilaments: strengthen the axons of neurons 4) rimentins: provides mechanical strength43
7739214638microtubules-grow at each end, shrink by the release of Tubulin dimmers -participate in many cell activities, mainly motion44
7739236544cilia(made of microtubules) back and forth motion -tiny appendages45
7739256652flagellatail-like movement46
7739266541ECM-extra cellular matrix -things outside of the cell -found in animals cells -functions in support, adhesion, movement, and regulation -made of glycoproteins -can regulate the cells behavior as far as fluids -influences the activity of the genes in the nucleus47
7739290798collagen-found in the ECM -half of the total protein in our body -it forms strong fibers outside the cell48
7739301544basal body-anchors the flagellum -similar to the centriole49
7739322356dyneins-large proteins -connect microtubules: strengthening -called little minions to help movement50
7739345993proteoglycansnetwork in which the collagen fibers are embedded51
7739364370fibronectinsattach some cells to the ECM52
7739385935intergrins-receptor proteins that are built into the plasma membranes -spans the membrane -in the middle of the phospholipid bilayer53
7739480896intercellular junctionshelp integrate cells into higher levels of structure and function54
7739487841tight junction-prevents leakage of enzymes, fluid, or chemical signals between cells -membrane of different cells is fused together55
7739501977desmosomesfunctions as an anchor to tie down each sell to form sheets of cell (tissue)56
7739517342gap junctions-allows a current for passage of material between cells -allows cells to exchange material -allows cells to send signals/communicate -allows cells to act as one57

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