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AP Biology- Biochemistry Flashcards

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12296178525ionic bondbond resulting from a transfer of electrons0
12296178526covalent bondbond resulting from the sharing of electrons1
12296178527nonpolarelectrons shared equally2
12296178528polarelectrons shared unequally3
12296178529buffersubstance that resists changes in pH, ex water4
12296178530isomerorganic compounds with the same molecular formula but different structure5
12296178531monosaccharideC6H12O6 simple sugar; glucose, galactose, and fructose6
12296192878IsomerCompounds with the same formula but different structures.7
12296178532glycerolalcohol portion of a lipid8
12296178533fatty acidhydrocarbon chain with a carboxyl group at one end; majority portion in lipids9
12296178534saturated fatfat without double bonds, animal fat10
12296178535unsaturated fatfat with double bonds, plant or fish oil11
12296178536steroidlipid with a four fused ring structure; cholesterol and testosterone12
12296178537peptide bondbond creating amino acid chains or polymers, Dehydration reaction13
12296178538primary structurelinear sequence of amino acids; peptide bonds14
12296178539secondary structurea specific region of a protein formed with hydrogen bonds- beta pleated sheet or alpha helix15
12296178540tertiary structureoverall 3D folding of one protein chain; formed from R-group interactions16
12296178541quaternary structureprotein complex with more than one polypeptide chain17
12296178542alpha helixsecondary structure form of a protein; human hair (keratin)18
12296178543beta pleated sheetsecondary structure form of a protein; spider webs and silk19
12296178544functional groupcomponents of organic molecules most often involved in chemical reactions20
12296178545metabolismsum of all chemical reactions that take place in cell21
12296178546enzymecatalytic protein that lowers a reaction's energy of activation22
12296178547induced fit modelenzyme model where the substrate induces the enzyme to alter its shape slightly so it fits better23
12296178548cofactorinorganic chemical compound or metallic ion that is required for an enzyme's activity24
12296178549coenzymeorganic molecules that are required by certain enzymes to carry out catalysis (vitamins)25
12296178550competitive inhibitioncompounds that look like the normal substrate compete for the same active site on the enzyme26
12296178551noncompetitive inhibitiona molecule binds to an enzyme somewhere other than the active site and reduces the activity of the enzyme27
12296178552allosteric regulationthe regulation of an enzyme by binding an effector molecule at a site other than the enzyme's active site28
12296178553cohesionattractive forces between molecules of the same substance29
12296178554saltan ionic compound which is made up of two groups of oppositely charged ions.30
12296178555chemical equilibriumwhen the reaction rate is the same in either direction31
12296178556polymerlong molecule consisting of many similar or identical monomers linked together32
12296178557monomerthe subunit that serves as the building block of a polymer.33
12296178558adhesionattractive forces between unlike molecules34
12296178559surface tensionmeasure of how difficult it is to stretch or break the surface of a liquid35
12296178560van der Waals interactionstertiary structure; weak attractions between molecules or parts of molecules that result from localized charge fluctuations36
12296178561evaporative cooling / heat of vaporizationproperty of a liquid where the surface becomes cooler during evaporation due to the loss of molecules37
12296178562disulfide bridgetertiary structure; strong covalent bond formed when one sulfur of one cysteine monomer bonds to the sulfur of another38
12296178563hydrophobic interactiontertiary structure; weak chemical attraction formed when molecules that do not mix with water change conformation to exclude the water39
12296178564hydrocarbonorganic molecule consisting of only hydrogen and carbon, nonpolar40
12296178565macromoleculegiant molecule formed by the joining of smaller molecules41
12296178566nucleotide (3 parts?)building block of a nucleic acid; five carbon sugar covalently bonded to a nitrogen base and a phosphate group42
12296178567pyrimidinecytosine, thymine, and uracil; six-membered ring43
12296178568purineadenine and guanine; six-membered ring fused to a five-membered ring44
12296178569hydroxylhydrogen bonded to oxygen bonded to an organic molecule's carbon skeleton; alcohol; polar45
12296178570carbonylcarbon double bonded to oxygen; ketones and aldehydes46
12296178571carboxyloxygen double bonded to a carbon atom that is bonded to a hydroxyl group47
12296178572aminenitrogen bonded to two hydrogens and to the carbon skeleton48
12296178573sulfhydryl or Thiolsulfur bonded to hydrogen in roughly the shape of a hydroxyl; cysteine49
12296178574phosphatephosphorous bonded to four oxygens, two have negative charges, one is bonded to the carbon skeleton; phospholipid50
12296178575methylcarbon bonded to three hydrogens; arrangement determines function of male and female sex hormones51
12296178576macromoleculea giant molecule formed by the joining of smaller molecules, usually by a dehydration reaction.52
12296178577Four classes of biological macromoleculesProteins, carbohydrates, nucleic acids, lipids53
12296178578polymera long molecule consisting of many similar or identical monomers linked together by covalent bonds.54
12296178579dehydration synthesisa chemical reaction in which two molecules become covalently bonded to each other with the removal of a water molecule.55
12296178580hydrolysisa chemical reaction that breaks bonds between two molecules by the addition of water; functions in dis-assembly of polymers to monomers.56
12296178581proteina biologically functional molecule consisting of one or more polypeptides folded and coiled into a specific three-dimensional structure.57
12296178582Functions of proteinsstructural support, catalyst, transport, defense, movement, regulation58
12296178583amino acidan organic molecule possessing both a carboxyl and an amino group. The monomers of polypeptides. There are 20 different forms. Distinguished by side chains.59
12296178584peptide bondthe covalent bond between the carboxyl group on one amino acid and the amino group on another, formed by a dehydration reaction.60
12296178585denaturationloss of a proteins normal 3D structure; can possibly be caused by pH and temperature which affect the ionic bonds, hydrogen bonds & hydrophilic interactions61
12296178586enzymea macromolecule serving as a catalyst, a chemical agent that increases the rate of a reaction without being consumed by the reaction. most of them are proteins.62
12296178587carbohydratea sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides). Primarily C, H and O.63
12296178588What are the functions of carbohydratesfunction as energy source & structure64
12296178589monosaccharidethe simplest carbohydrate, active alone or serving as a monomer for disaccharides and polysaccharides. Also called simple sugars, they have formulas that are generally some multiple of CH2O (1:2:1).65
12296178590disaccharidea double sugar, consisting of two monosaccharides joined by a glycosidic linkage formed by a dehydration reaction.66
12296178591glycosidic linkagea covalent bond formed between two monosaccharides by a dehydration reaction.67
12296178592polysaccharidea polymer of many monosaccharides, formed by dehydration reactions.68
12296178593starcha storage polysaccharide in plants, consisting entirely of alpha glucose monomers joined by x glycosidic linkages. Used for energy storage.69
12296178594glycogenan extensively branched alpha glucose storage polysaccharide found in the liver and muscle of animals; the animal equivalent of starch.70
12296178595cellulosea structural polysaccharide of plant cell walls, consisting of beta glucose monomers joined by B glycosidic linkages. A type of plant starch.71
12296312563ChitinPolysaccharide found in arthropod exoskeletons and fungal cell walls. (Beta Glucose)72
12296178596lipidsany of a group of large biological molecules, including fats, phospholipids, and steroids, that mix poorly, if at all, with water (hydrophobic). No true monomers.73
12296178597What are the three types of lipids?fats/oils, phospholipids & steroids74
12296178598fat/oila lipid consisting of three fatty acids lined to one glycerol molecule; also called a triacylglycerol or triglyceride. Function as energy storage.75
12296178599saturateda fatty acid in which all carbons in the hydrocarbon tail are connected by single bonds, thus maximizing the number of hydrogen atoms that are attached to the carbon skeleton.76
12296178600unsaturateda faty acid that has one or more double bonds betwen carbons in the hydrocarbon tail. such bonding reduces the number of hydrogen atoms attached to the carbon skeleton.77
12296178601triglyceridea lipid consisting of three fatty acids linked to one glycerol molecule78
12296178602phospholipida lipid made up of glycerol joined to two fatty acids and a phosphate group. The hydrocarbon chains of the fatty acids act as nonpolar hydrophobic tails, while the rest of the molecule acts s a polar, hydrophilic head. They form bilayers that function as biological membrane.79
12296178603steroida type of lipid characterized by a carbon skeleton consisting of four fused rings with various chemical groups attached. Function as part of membranes or hormones.80
12296178604hydrophobica type of weak chemical interaction caused when molecules that do not mix with water coalesce to exclude water.81
12296178605polypeptidea polymer of many amino acids linked together by peptide bonds.82
12296178606nucleotidethe building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and one or more phosphate groups.83
12296178607phosphodiester linkagebond between nucleotides in nucleotide chain to form polynucleotide84
12296178608RNAtransmission of information, consists of monomers with a ribose sugar and nitrogenous bases cytosine (C), guanine (G), adenine (A) & uracil (U). Single stranded.85
12296178609DNAa nucleic acid molecule, usually a double-stranded helix, in which each polynucleotide strand consists of nucleotide monomers with a deoxyribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T); capable of being replicated and determining the inherited structure of a cell's proteins.86
12296178610deoxyribosethe sugar component of DNA nucleotides, having one fewer hydroxyl group than ribose, the sugar component of RNA nucleotides.87
12296178611ribosethe sugar component of RNA nucleotides.88

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