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AP Biology Biomolecules Flashcards

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7685698316HydroxylPolar, alcohol0
7685698317CarbonylPolar, Found in sugar, responsible for sugars being so easily dissolved in water1
7685698318CarboxylActs as an acid, charge of 1-2
7685698319AminoActs as a base, charge of 1+3
7685698320SulfhydrylCross-linking covalent bonds help stabilize protein structures4
7685698321PhosphatePotential to react with water, releasing energy5
7685698322MethylAffects expression of genes6
7685698323ATPPrimary energy-transferring molecule in the cell7
7685698324PolymerA long molecule consisting of many similar building blocks8
7685698325MonomerSmall building block molecules9
7685698326Dehydration ReactionOccurs when two monomers bond together through the loss of a water molecule -Builds polymers10
7685698327HydrolysisReverse of the dehydration reaction, breaking down complex molecules by the chemical addition of water -Disassembles polymers11
7685698328Monosaccharide(single sugars) have molecular formulas that are usually multiples of CH2O Classified by: - Location of the carbonyl group - Number of carbons in the skeleton12
7685698329PolysaccharidePolymers of sugars that have storage and structural roles13
7685698330Glycosidic LinkageA covalent bond formed between two monosaccharides by a dehydration reaction14
7685698331StarchA storage polysaccharide of plants, consists of entirely glucose monomers; The simplest form is amylase15
7685698332GlycogenA storage polysaccharide in animals (stored mainly in liver and muscle cells)16
7685698333CelluloseA structural polysaccharide comprising plant cell walls (glucose polymer with different glycosidic linkages - beta glucose)17
7685698334LipidOne class of large biological molecules that do not form polymers, have little or no affinity for water, main function is energy storage18
7685698335Saturated Fatty AcidHave the maximum number of hydrogen atoms possible and no double bonds19
7685698336Unsaturated Fatty AcidHave one or more double bonds20
7685698337Ester LinkageHow three fatty acids are joined to glycerol, creating a triacylglycerol21
7685698338PhospholipidTwo hydrophobic fatty acids and a hydrophilic phosphate group are attached to glycerol22
7685698339SteroidLipids characterized by a carbon skeleton consisting of four fused rings23
7685698340PolypeptideUnbranched polymers built from the same set of 20 amino acids24
7685698341Amino acidOrganic molecules with carboxyl and amino groups25
7685698342Peptide bondThe covalent bond between two amino acid units, formed by a dehydration reaction.26
7685698343Primary structureThe sequence of amino acids in a protein, is like the order of letters in a long word Determined by inherited genetic information27
7685698344Secondary structureCoils and folds result from hydrogen bonds between repeating constituents of the polypeptide backbone Ex: alpha helix, beta pleated sheet28
7685698345Tertiary structureDetermined by interactions between R groups, rather than interactions between the backbone constituents29
7685698346Quaternary structureResults when two or more polypeptide chains form one macromolecule30
7685698347DenaturationLoss of a protein's native structure, biologically inactive protein31
7685698348NucleotideMonomers of polynucleotides32
7685698349PolynucleotideChain of nucleotides that alone or with another such chain makes up a nucleic acid33
7685698350Phosphodiester linkageThe connection in a nucleic acid strand, formed by covalently bonding two nucleotides together34
7685698351MetabolismThe totality of an organism's chemical reactions35
7685698352Catabolic pathwayRelease energy by breaking down complex molecules into simpler compounds36
7685698353Anabolic pathwayConsume energy to build complex molecules from simpler ones37
7685698354First law of thermodynamicsEnergy can be transferred and transformed, but it cannot be created or destroyed.38
7685698355Free energyEnergy that can do work when temperature and pressure are uniform, as in a living cell39
7685698356Exergonic reactionProceeds with a net release of free energy and is spontaneous40
7685698357Endergonic reactionAbsorbs free energy from its surroundings and is nonspontaneous41
7685698358PhosphorylationThe metabolic process of introducing a phosphate group into an organic molecule, how ATP drives endergonic reactions42
7685698359EnzymeProtein catalyst that speeds up the rate of specific biological reactions43
7685698360Activation energyThe initial energy needed to start a chemical reaction44
7685698361Induced FitBrings groups of the active site into positions that enhance their ability to catalyze the reaction45
7685698362CofactorNon-protein enzyme helpers46
7685698363Competitive InhibitionBind to the active site of an enzyme, competing with the substrate47
7685698364Noncompetitive InhibitionBind to another part of an enzyme, causing the enzyme to change shape and making the active site less effective48
7685698365Allosteric RegulationMay either inhibit or stimulate activity, interaction in a site away from the active site which activates or deactivates a protein49

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