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AP Biology Cells Review Flashcards

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9021767677endergonic reactionreaction where energy is stored in chemical bonds0
9021782164exergonic reactionreaction where energy is released from chemical bonds1
9021789857Prokaryotic CellsBacteria; no nucleus or organelles2
9021793472Eukaryotic cellscomplex; have organelles3
9021798469Ribosome2 subunits of rRNA; responsible for protein synthesis4
9021805814Golgi BodyPart of the endomembrane system; cis face receives materials, so that they can be modified and packaged; trans face releases vesicles5
9021829320Rough ERaids in protein synthesis by altering the structure of proteins; contains ribosomes6
9021842865Smooth ERsite of lipid synthesis; involved in detoxification of cells7
9021850959Vacuolesstorage vesicles found within the cytoplasm of eukaryotic cells8
9021855086Central VacuoleWhen filled with water it maintains turgor pressure of plant cells; not found in animal cells9
9021875238Chloroplastsite of photosynthesis; only in plant cells; appear green due to the pigment chlorophyll which reflects green light10
9021886077mitochondriafound in BOTH plant and animal cells; site of cellular respiration whereby ATP is made11
9021898722lysosomea vesicle that contains digestive enzymes to break down cellular food and/or waste12
9021925682nucleushome of the genetic information (DNA)13
9021935601nucleolussite of ribosome synthesis; found in the center of the nucleus14
9021943532chromatinthe form in which DNA is found within the nucleus during the majority of the cell cycle15
9021959879nuclear envelopesurrounds the nucleus and contains pores to allow for communication with the rest of the cell, as well as, allowing for ribosomes to exit the nucleolus16
9021976547animals, plants, fungi, protistaeukaryotic17
9021979266bacteriaprokaryotic18
9021984230bacillus (plural: bacilli)rod shaped bacteria19
9021992142coccus (plural: cocci)round shaped bacteria20
9022007937spirillum (spirilla)spiral shaped bacteria21
9022015484cell membranefound in ALL cell types surrounding the cytoplasm and maintaining selective permeability22
9022023654cell wallFound in plant, fungal, bacterial, and some prostist cells; rigid wall for protection and shape; regulates the cell's volume23
9022044120turgor pressureexerted onto the cell wall in order to maintain rigid, upright, and erect plant cells and leaves (maximizing photosynthesis)24
9022067018photosynthesisuses sunlight to convert water and carbon dioxide into glucose and oxygen (which is given off as a byproduct)25
9022102548cellular respirationconversion of glucose into ATP, water, and CO2; occurs in the mitochondria26
9022119713cytoskeletoncomposed of protein filaments and microtubules that extend throughout the cytoplasm and allow for cellular movement and structure27
9022129753centriolessmall structures composed of microtubules that organize the cytoskeleton during cell division28
9022157435flagellalong whip-like tails that allow for cell movement; found in sperm cells29
9022160892ciliashort hair-like extensions of the cell membrane that wave back and forth allowing for cell movement; found within cells of the respiratory system30
9022184291pseudopodia"false-feet;" extensions of the cytoplasm that move the cell membrane allowing for slow movement of cells; found in amoeba (protists)31
9022206351catabolic reactionschemical reaction whereby large molecules are broken down (ex: glycogen converted into many glucose monosaccharides)32
9022221387anabolic reactionschemical reaction whereby small molecules come together (as water is removed) to build large molecules (ex: amino acids coming together to create a protein)33
9022238151Gibbs Free EnergyAvailable energy to use for chemical reactions34
9022248067enthalpythe total energy within a system35
9022260652entropya measure of the disorder within a system36
9022272130high entropyA great amount of disorder; low available energy as it has been released from chemical bonds37
9022280308low entropya large amount of stored energy; an anabolic reaction has occurred38
9022286305osmosismovement of water from high to low concentration through aquaporins39
9022290532diffusionmovement of solutes from high to low concentration across the phospholipid bilayer40
9022296484facilitated diffusionmovement of large and/or polar solutes from high to low concentration through a channel or carrier protein within the cell membrane41
9022315274carrier proteinallow for specific molecules to bind and cross the cell membrane42
9022331055channel proteina ligand attaches to its binding site, modifying its shape allowing for the diffusion of molecules across the cell membrane43
9022357037ligandchemical signals that begin the process of signal transduction44
9022365084amphipathicmolecules containing a polar and non-polar region; example: phospholipids45
9022384720phospholipid tailsthe non-polar region of the cell membrane46
9022388661phospholipid headsthe polar regions of the cell membrane (facing the extracellular and intracellular areas)47
9022426476hydrophilicpolar48
9022429259hydrophobicnonpolar49
9022432071cytoplasmgel-like matrix in which organelles are suspended50
9022439984organellescontain their own phospholipid bilayers within the cell51
9022452839passive transportmovement of molecules along or with the concentration gradient (high to low)52
9022458359active transportmovement of molecules against the concentration gradient (low to high)53
9022465197endocytosisa vesicle forms along the cell membrane and pinches off within the cell - allowing for substances to enter54
9022474316phagocytosislarge, solid molecules brought into the cell via cell membrane pockets (called vesicles)55
9022493298pinocytosissmall, liquid molecules brought into the cell via cell membrane pockets (called vesicles)56
9022507108receptor-mediated endocytosisreceptors along the surface of the cell membrane allow for the binding of specific molecules, then causing a vesicle to form around them, bringing them into the cell57
9023433709protein kinase receptorsligand binding causes a change in shape of the receptor protein, causing its catalytic domain to hydrolyze ATP, and then phosphorylate a target molecule. The target molecule then triggers other molecules within the cell to respond58
9023453984Cell signaling pathwayligand binding(Reception) - stimulation of receptor(Transduction) - cellular response59
9023469738Ion channelsallow movement of charged molecules to diffuse across the cell membrane following the binding of a ligand60
9023496277ATPAdenosine triphosphate61
9023498591isotonic environmentsolute concentrations inside and out of the cell are equal62
9023512738hypertonic environmentsolute concentration outside of the cell is higher than inside the cell63
9023516855hypotonic environmentsolute concentration outside of the cell is lower than inside the cell64
9023526921result of a hypotonic environmentcytolysis (splitting of a cell)65
9023671091result of a hypertonic environmentplasmolysis (release of cytoplasm; cell shrinking)66
9023685564equilibriumconcentrations of water inside and outside of cell are equal67
9023690517effect of a cell being in equilibriumwater flows into and out of the cell in equal amounts68
9023707469peripheral proteins involved in cellular recognitionglycoproteins69
9023713802cholesterola lipid that helps to maintain the fluidity of the cell membrane70
9023723873hypertonic71
9023738073hypotonic72
9023741973isotonic73
9023750883responsible for turgor pressurehypotonic environment74
9023759930#2 in the picturegap junctions; tunnels that allow for the transport of molecules between adjacent cells75
9023772201tight junctionsallow for NO transport of molecules between adjacent cells76
9023785247#3 in the picturedesmosomes; anchor adjacent cells together in order to create tissue77
9023804319plasmodesmatacytoplasmic channels that allow for movement of molecules between adjacent PLANT cells78
9023881127autocrine signalssignals that only affect the cell from which it was released79
9023895595juxtacrine signalsaffect cells in direct contact with one another; occurring only over short distances; important during embryonic development80
9024002979paracrine signalsaffect cells nearby; involved in the inflammatory response (ex. when you cut or smash your finger it gets red, due to increased blood flow to the area)81

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