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AP Biology Cells Review Flashcards

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9695635970endergonic reactionreaction where energy is stored in chemical bonds0
9695635971exergonic reactionreaction where energy is released from chemical bonds1
9695635972Prokaryotic CellsBacteria; no nucleus or organelles2
9695635973Eukaryotic cellscomplex; have organelles3
9695635974Ribosome2 subunits of rRNA; responsible for protein synthesis4
9695635975Golgi BodyPart of the endomembrane system; cis face receives materials, so that they can be modified and packaged; trans face releases vesicles5
9695635976Rough ERaids in protein synthesis by altering the structure of proteins; contains ribosomes6
9695635977Smooth ERsite of lipid synthesis; involved in detoxification of cells7
9695635978Vacuolesstorage vesicles found within the cytoplasm of eukaryotic cells8
9695635979Central VacuoleWhen filled with water it maintains turgor pressure of plant cells; not found in animal cells9
9695635980Chloroplastsite of photosynthesis; only in plant cells; appear green due to the pigment chlorophyll which reflects green light10
9695635981mitochondriafound in BOTH plant and animal cells; site of cellular respiration whereby ATP is made11
9695635982lysosomea vesicle that contains digestive enzymes to break down cellular food and/or waste12
9695635983nucleushome of the genetic information (DNA)13
9695635984nucleolussite of ribosome synthesis; found in the center of the nucleus14
9695635985chromatinthe form in which DNA is found within the nucleus during the majority of the cell cycle15
9695635986nuclear 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
9695635987animals, plants, fungi, protistaeukaryotic17
9695635988bacteriaprokaryotic18
9695635989bacillus (plural: bacilli)rod shaped bacteria19
9695635990coccus (plural: cocci)round shaped bacteria20
9695635991spirillum (spirilla)spiral shaped bacteria21
9695635992cell membranefound in ALL cell types surrounding the cytoplasm and maintaining selective permeability22
9695635993cell wallFound in plant, fungal, bacterial, and some prostist cells; rigid wall for protection and shape; regulates the cell's volume23
9695635994turgor pressureexerted onto the cell wall in order to maintain rigid, upright, and erect plant cells and leaves (maximizing photosynthesis)24
9695635995photosynthesisuses sunlight to convert water and carbon dioxide into glucose and oxygen (which is given off as a byproduct)25
9695635996cellular respirationconversion of glucose into ATP, water, and CO2; occurs in the mitochondria26
9695635997cytoskeletoncomposed of protein filaments and microtubules that extend throughout the cytoplasm and allow for cellular movement and structure27
9695635998centriolessmall structures composed of microtubules that organize the cytoskeleton during cell division28
9695635999flagellalong whip-like tails that allow for cell movement; found in sperm cells29
9695636000ciliashort hair-like extensions of the cell membrane that wave back and forth allowing for cell movement; found within cells of the respiratory system30
9695636001pseudopodia"false-feet;" extensions of the cytoplasm that move the cell membrane allowing for slow movement of cells; found in amoeba (protists)31
9695636002catabolic reactionschemical reaction whereby large molecules are broken down (ex: glycogen converted into many glucose monosaccharides)32
9695636003anabolic 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
9695636004Gibbs Free EnergyAvailable energy to use for chemical reactions34
9695636005enthalpythe total energy within a system35
9695636006entropya measure of the disorder within a system36
9695636007high entropyA great amount of disorder; low available energy as it has been released from chemical bonds37
9695636008low entropya large amount of stored energy; an anabolic reaction has occurred38
9695636009osmosismovement of water from high to low concentration through aquaporins39
9695636010diffusionmovement of solutes from high to low concentration across the phospholipid bilayer40
9695636011facilitated diffusionmovement of large and/or polar solutes from high to low concentration through a channel or carrier protein within the cell membrane41
9695636012carrier proteinallow for specific molecules to bind and cross the cell membrane42
9695636013channel proteina ligand attaches to its binding site, modifying its shape allowing for the diffusion of molecules across the cell membrane43
9695636014ligandchemical signals that begin the process of signal transduction44
9695636015amphipathicmolecules containing a polar and non-polar region; example: phospholipids45
9695636016phospholipid tailsthe non-polar region of the cell membrane46
9695636017phospholipid headsthe polar regions of the cell membrane (facing the extracellular and intracellular areas)47
9695636018hydrophilicpolar48
9695636019hydrophobicnonpolar49
9695636020cytoplasmgel-like matrix in which organelles are suspended50
9695636021organellescontain their own phospholipid bilayers within the cell51
9695636022passive transportmovement of molecules along or with the concentration gradient (high to low)52
9695636023active transportmovement of molecules against the concentration gradient (low to high)53
9695636024endocytosisa vesicle forms along the cell membrane and pinches off within the cell - allowing for substances to enter54
9695636025phagocytosislarge, solid molecules brought into the cell via cell membrane pockets (called vesicles)55
9695636026pinocytosissmall, liquid molecules brought into the cell via cell membrane pockets (called vesicles)56
9695636027receptor-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
9695636028protein 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
9695636029Cell signaling pathwayligand binding(Reception) - stimulation of receptor(Transduction) - cellular response59
9695636030Ion channelsallow movement of charged molecules to diffuse across the cell membrane following the binding of a ligand60
9695636031ATPAdenosine triphosphate61
9695636032isotonic environmentsolute concentrations inside and out of the cell are equal62
9695636033hypertonic environmentsolute concentration outside of the cell is higher than inside the cell63
9695636034hypotonic environmentsolute concentration outside of the cell is lower than inside the cell64
9695636035result of a hypotonic environmentcytolysis (splitting of a cell)65
9695636036result of a hypertonic environmentplasmolysis (release of cytoplasm; cell shrinking)66
9695636037equilibriumconcentrations of water inside and outside of cell are equal67
9695636038effect of a cell being in equilibriumwater flows into and out of the cell in equal amounts68
9695636039peripheral proteins involved in cellular recognitionglycoproteins69
9695636040cholesterola lipid that helps to maintain the fluidity of the cell membrane70
9695636049hypertonic71
9695636050hypotonic72
9695636051isotonic73
9695636041responsible for turgor pressurehypotonic environment74
9695636042#2 in the picturegap junctions; tunnels that allow for the transport of molecules between adjacent cells75
9695636043tight junctionsallow for NO transport of molecules between adjacent cells76
9695636044#3 in the picturedesmosomes; anchor adjacent cells together in order to create tissue77
9695636045plasmodesmatacytoplasmic channels that allow for movement of molecules between adjacent PLANT cells78
9695636046autocrine signalssignals that only affect the cell from which it was released79
9695636048paracrine 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)80

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