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Biochemistry Flashcards

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4976421395atomprotons, neutrons, electrons0
4976425488electronegativityphysical property indicating how strongly an atom holds its electrons, defined value1
4976432183electronegative trendincreases up and to the right2
4976436938metalseasily give away electrons3
4976439642nonmetalshold electrons tightly4
4976442112stabilitynoble gases, full outer shell, achieved through bonding5
49764444413 types of bondscovalent, ionic, hydrogen6
4976446992covalenteven sharing of electrons, 0-0.5, non polar7
4976446993ionicnot even sharing of electrons, one outright takes the other's electrons, 0.6-2.08
4976446994hydrogenforce of attraction between oppositely charged atoms, hydrogen to nitrogen, oxygen, and fluorine, 2.0+9
4976465834non-polarwhen atoms within molecules have relatively the same charge10
4976469244polar covalentstrong grip, but doesn't take it all the way11
49770949106 properties of watersurface tension, high specific heat, insulating property, cohesion, adhesion, evaporative cooling12
4976490798bonds within water moleculepolar covalent13
4976490799bonds between water moleculeshydrogen bonds14
4976497567macromoleculeslarge molecules made up of monomers added together, many repeated building units15
49765034922 types of reactionsdehydration synthesis, hydrolysis16
4976505677dehydration synthesis (condensation)lose water to build something else, water lost is equal to (monomers - 1)17
4976505678hydrolysisto break something using water18
49765150604 types of macromoleculescarbs, protein, fats, nucleic acid19
4976523094carbsbody's first and preferred source of energy, (CH2O)n ratio, have carbonyl group, hydroxyl group, carbon skeleton, definite spatial arrangement20
49765186153 types of carbssimple sugar (monosaccharides), disaccharides, polysaccharides21
4976538519monosaccharidesglucose, fructose, galactose22
4976539131disaccharidessucrose, maltose, lactose23
4976969980bonds in disaccharidesglycosidic linkages, covalent bond from dehydration synthesis 1 water from 2 monomers24
4976541683polysaccharidesstarch, cellulose, glycogen25
4976992449starch v cellulosestarch has OH below the plane every time same orientation, helical or branched cellulose has OH above the plane and below alternating, can hydrogen bond with those parallel, rigid and indigestible, straight wall like formation26
4976547229fatsCHO but no ratio, body second source of energy, 2x energy per unit weight, long, complex, nonpolar, butters, oils, wax, function to add structure to membrane, glycerol and 3 fatty acid monomers called triacylglycerol not polymers, little affinity for water27
4977027541bonds in fatsester linkages, bond between carboxyl (fatty acid) and hydroxyl (glycerol) group from dehydration synthesis28
4977015199phospholipidsmade from glycerol and 2 fatty acids29
4976688643glycerolthree carbon molecule to which fatty acids are attached30
49765472302 main types of fatssaturated, unsaturated31
4976550316saturatedall bonds are filled usually with hydrogen so nonpolar, animal fat, solid at room temp32
4976550317unsaturatednot all bonds are filled, some double bonds present, vegetable oil, liquid at room temp33
4976586509proteinCHON, amino acid monomers, not preferred source of energy, most complex structure34
49765897004 parts of proteincarboxyl group, amino group, variable r group, hydrogen35
4976608924primary structuresequence of amino acid chain, determines polarity for tertiary36
4976611489secondary structurealpha helix or beta sheet, folds37
4976611490tertiary structurefolding on itself three-dimensionally compensating polarity of r group38
4976614490quaternary structurebinding with other amino acids for combined structure39
4976629577peptide bondsremoval of water between two amino acids causing carbon to bond to nitrogen (dehydration synthesis)40
4976705838standard deviationmeasure of how much scores vary around the mean score41
4976708115standard errorthe standard deviation of an entire sampling distribution42
4976708116chi-squarevalue used to determine the likelihood that a particular set of outcomes is due to random chance or is actually significant43
4976742511elements of lifecarbon, hydrogen, oxygen, nitrogen44
4976744783essential elementneeded in large amounts for healthy growth45
4976744784trace elementneeded in minute quantities46
4976754663energycapacity to do work, stored in bonds47
4976772005van der waals interactionsforces from the ever changing movement of electrons that create hot spots of charges enabling atoms and molecules to stick to one another48
4976784644strong to weak bondscovalent, ionic, hydrogen, van der waals49
4976789659dynamic equilibriumpoint at which reactions off set one another, stable ration between reactants and products, not imply concentration50
4976799745cohesionattraction of something to itself51
4976799746adhesionattraction of something to something else52
4976809550surface tensiontightness across the surface of water that is caused by the polar molecules pulling on one another.53
4976817953calorieamount of heat needed to raise the temp of 1 g of water 1 degree celcius54
4976830917specific heatamount of heat needed to raise the temp of 1 g of a substance by 1 degree celcius55
4976844600molaritymol solute / liter solution56
4976855011ice floats at 4 degreesbecomes less dense by forming a crystal lattice that spreads out and stabilizes, bonds don't break up as easily, start to stabilize and remain since have little heat/energy57
4976894994concentration of H+ and OH- in pure water10^-7 M58
4976904974PH differencesph1 - ph 2 = how many zeros you put after 1, which is to say that it's 10x more in each increase or decrease59
4976915251bufferaccept hydrogen from solutions when it is in excess and donate when they are depleted, minimizing concentration changes, shift left or right as necessary when disassociated60
4976927151acid precipitationpresence of sulfur dioxide and nitrogen oxides in atmosphere react with water to form strong acids, electrical power plants, burning of fossil fuels (CO2 emission) are major source61
4977050505carboxyl group62
4977050506carbonyl group63
4977052629hydroxyl group64
4977313538amino group65
4977052630r groupdetermines protein polarity, folding orientation, water affinity, and electrical charge66
4977133740chitinpolysaccharide found in arthropod exoskeletons and fungal cell walls67
4977136534steroidlipid characterized by a carbon skeleton consisting of four rings with various functional groups attached68
4977136535cholesterola type of fat made by the body from saturated fat, most common steroid69
4977138961conformationthe particular three-dimensional shape of a protein molecule70
4977141927disulfide bridgecovalent bond formed between the sulfur atoms of two cysteine side chains71
4977141928denaturationa process in which a protein unravels and loses its native conformation72
4977141929chaperone proteinmolecule that directs the proper folding of polypeptides73

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