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AP Biology Chapter 3 Flashcards

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7767977533isomerscompounds- same molecular formula, different structural formulas0
7767977534structural isomersdiffer in arrangement of atoms and often in location of double bonds1
7767977535geometric isomerssame covalent bonds, differ in arrangement around double bond2
7767977536enantiomersleft and right handed (mirror images) of each other3
7767977537macromoleculelarge molecule made by joining smaller molecules together4
7767977538polymerchainlike molecule formed by linking together man similar small molecule (monomers)5
7767977539dehydration synthesisreaction joining monomers to form polymers or other macromolecules6
7767977540hydrolysisbreaking of bonds between monomers through the addition of water7
7767977541Carbohydrates-sugars and their polymers -sugars serve as fuel and carbon sources -have general formula of (CH2O)n monosaccharides8
7767977542glucoseCARBOHYDRATES -C6H12O6 -broken down to yield energy in cellular respiration9
7767977543disaccharideCARBOHYDRATES -two monosaccharides bonded together by a glycosidic linkage (a covalent bond formed a dehydration reaction between two monosaccharides10
7767977544glucose+fructose=CARBOHYDRATES sucrose (table sugar)11
7767977545glucose+glucose=CARBOHYDRATES maltose12
7767977546polysaccharidesCARBOHYDRATES -polymers of sugars -have storage and structural roles13
7767977547starchCARBOHYDRATES -energy storage molecule -polymer made of glucose molecules joined b 1-4 linkages (helical shape) -polymer of a-glucose14
7767977548glycogen-storage molecule in animals -highly branched polymer of glucose -polymer of a-glucose15
7767977549celluloseCARBOHYDRATES -major structural component of plant cells (most abundant organic compound on earth) β linkages of cellulose cannot be broken down by the enzymes that digest starch-> very few organisms (some bacteria, microorganisms and fungi) are able to digest cellulose16
7767977550chitinCARBOHYDRATES -polysaccharides that from glucose monomers with nitrogen-containing group -found in exoskeleton of arthropods and cell walls of many fungi -polymer of b-glucose17
7767977551lipids-fats, phospholipids, steroids -do not form polymers18
7767977552fats (Triglycerides)LIPIDS composed of 3 fatty acids attached to a glycerol19
7767977553fatty acidLIPIDS long hydrocarbon chain with a carboxyl group at end20
7767977554glycerolLIPIDS 3-carbon alcohol21
7767977555ester linkagesLIPIDS bond between hydroxyl and carboxyl group (links fatty acid to glycerol22
7767977556unsaturated fatty acidsLIPIDS -has c=c bond -kinked/liquid -fats of plants and fishes -more unsaturated, the better -2+ covalent bonds23
7767977557saturated fatty acidsLIPIDS - no c=c bonds -solid -animal fats -cardio diseases -single covalent bond24
7767977558phospholipidsLIPIDS -glycerol linked to two acids and a negatively charged phosphate group -phosphate is hydrophilic, water soluble -fatty acid is hydrophobic - in cell membrane, head face out, tail face in25
7767977559Proteins-consists of one or more polypeptide chains folded into 3-D, shapes determines functions26
7767977560polypeptidePROTEINS polymer of amino acids27
7767977561R groupPROTEINS -variable side chain that gives each amino acid its unique physical and chemical properties -hydrophobic interactions, van der Waals interactions, hydrogen bonds and ionic bonds28
7767977562peptide bondPROTEINS links amino group of one amino acid with the carboxyl group of another formed b dehydration synthesis rxn29
7767977563Four Levels of Protein StructurePROTEINS -biologists use x-ray crystallography and computer modeling to establish the 3D shapes of protein Primary Structure: sequence of amino acids Secondary structure: coiling or folding of amino acid chain (polypeptide), stabilized by hydrogen bonds between oxygen of one amino acid and hydrogen of another, can be coiled (a helix) or pleated (B pleated helix) Tertiary structure: interactions between R groups produce unique shape for each protein, maintained b disulfide bonds Quaternary structure: proteins are composed of two or more polypeptide chains in precise arrangement.30
7767977564denaturationPROTEINS -interactions that give proteins their shape can be disrupted by changes in pH, slat concentration, or temperature -causes proteins to lose their shape and function31
7767977565disulfide bridgesPROTEINS covalent bonds between sulfhydryl side groups of cysteine monomers32
7767977566nucleic acidsmacromolecules that carry and transmit the genetic code33
7767977567DNANUCLEIC ACIDS -deoxyribonucleic acid: the genetic material that is inherited from one generation to the next, deoxyribose sugar34
7767977568RNANUCLEIC ACIDS -ribonucleic acid, transcribes genetic information from the DA and directs the synthesis of proteins, ribose sugar35
7767977569nucleotideNUCLEIC ACIDS -building blocks of nucleic acids- consists of a 5-carbon sugar, phosphate group and a nitrogen base -pyrimidine: nitrogenous bases consisting of single ring, cytosine (C) both DNA RNA, thymine (T) DNA and uracil (U) RNA -purine: nitrogenous base consisting of two rings, adenine (A) and guanine (G)36
7767977570monomers or componentssugars: monosaccharides lipids: fatty acids proteins: amino acids nucleic acids: nucleotides37
7767977571polymer or large moleculesugars: polysaccharides lipids: triacylglycerols proteins: polypeptides nucleic acids: polynucleotides38
7767977572type of linkagesugar: glycosidic linkages lipids: ester linkages proteins: peptide bonds nucleic acids: phosphodiester linkages39
7767977573Which type of molecule includes an example with a long-chain carbon backbone?lipid40
7767977574What is the dominant element attached to the carbon backbone?hydrogen41
7767977575Which molecule have a central carbon atom with 4 different components around it?amino acids42
7767977576Which molecule have a sugar, nitrogenous base and phosphate group?nucleic acid43
7767977577What three structural groups shown do all amino acids have in common?amine, carboxyl and R group with hydrogen44
7767977578Functions of 4 biological macromoleculescarbohydrates: energy storage, receptors, structure of plant cell wall, cellulose, glucose, deoxyribose, methionine proteins: enzymes, structure, receptors, transport lipids: membrane structure, energy storage, insulation, enzymes, chemical signaling(hormones) nucleic acids: information storage and transfer45
7767977579Chemical properties of hydrocarbons-composed of only carbon and hydrogen, -contains a large amount of stored energy, -may have linear, branched or ring structures, insoluble in water46
7767977580the number of covalent bonds formed by an atom of carbon is determined bythe number of electrons in its outermost electron shell47
7767977581Proteins are able to perform man diverse biological functions becausethe are polymers formed from chemically diverse subunits which can fold into many different shapes48
7767977582The sugar subunits in the DNA backbone are joined by what type of bonds?phosphodiester bonds49
7767977583salt and vinegar preserve our food byhigh heat, low pH, and high salt concentrations50
7767977584DNA is a good for storage of energy because...Ladder structure holds same info, so if some get damaged, it can be recovered51
7767977585Advantage of fat-dense, doesn't take up a lot of room -reserved for future use -doesn't weight as much52
7767977586Carboxylic acid group53
7767977587amine group54
7767977588phosphate group55
7767977589sugar group56
7767977590nitrogen base57
7767977591starch in a chloroplast58
7767977592starch59
7767977593monosaccharide60
7767977594nucleotide61
7767977595intermediate filament62
7767977596polypeptide63
7767977597amino acid64
7767977598adipose cell with fat droplets65
7767977599triglyceride66
7767977600fatty acid67
7767977601dehydration reaction68
7767977602hydrolysis reaction69
7767977603glucose70
7767977604sucrose71
7767977605maltose72
7767977606phosphodiester bonds73
7767977607dipeptide74
7767977608how do one make a polypeptide?with two amino acid group75
7767977609glucose+fructose=lactose (sugar in milk)76
7767977610fatty acid-hydrocarbons with carbonyl group at the end of the chain77
7767977611monounsaturated fatty acid fat-one double covalent bond78
7767977612phospholipids79
7767977613steroidsbackbone of four linked carbon rings80
7767977614steroids81
7767977615nitrogen basesadenine-thymine cytosine-guanine82

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