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AP Biology Chapter 3 Flashcards

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4896287116isomerscompounds- same molecular formula, different structural formulas0
4896287117structural isomersdiffer in arrangement of atoms and often in location of double bonds1
4896287118geometric isomerssame covalent bonds, differ in arrangement around double bond2
4896287119enantiomersleft and right handed (mirror images) of each other3
4896287120macromoleculelarge molecule made by joining smaller molecules together4
4896287121polymerchainlike molecule formed by linking together man similar small molecule (monomers)5
4896287122dehydration synthesisreaction joining monomers to form polymers or other macromolecules6
4896287123hydrolysisbreaking of bonds between monomers through the addition of water7
4896287124Carbohydrates-sugars and their polymers -sugars serve as fuel and carbon sources -have general formula of (CH2O)n monosaccharides8
4896287125glucoseCARBOHYDRATES -C6H12O6 -broken down to yield energy in cellular respiration9
4896287126disaccharideCARBOHYDRATES -two monosaccharides bonded together by a glycosidic linkage (a covalent bond formed a dehydration reaction between two monosaccharides10
4896287127glucose+fructose=CARBOHYDRATES sucrose (table sugar)11
4896287128glucose+glucose=CARBOHYDRATES maltose12
4896287129polysaccharidesCARBOHYDRATES -polymers of sugars -have storage and structural roles13
4896287130starchCARBOHYDRATES -energy storage molecule -polymer made of glucose molecules joined b 1-4 linkages (helical shape) -polymer of a-glucose14
4896287131glycogen-storage molecule in plants -highly branched polymer of glucose -polymer of a-glucose15
4896287132celluloseCARBOHYDRATES -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
4896287133chitinCARBOHYDRATES -polysaccharides that from glucose monomers with nitrogen-containing group -found in exoskeleton of arthropods and cell walls of many fungi -polymer of b-glucose17
4896287134lipids-fats, phospholipids, steroids -do not form polymers18
4896287135fats (Triglycerides)LIPIDS composed of 3 fatty acids attached to a glycerol19
4896287136fatty acidLIPIDS long hydrocarbon chain with a carboxyl group at end20
4896287137glycerolLIPIDS 3-carbon alcohol21
4896287138ester linkagesLIPIDS bond between hydroxyl and carboxyl group (links fatty acid to glycerol22
4896287139unsaturated fatty acidsLIPIDS -has c=c bond -kinked/liquid -fats of plants and fishes -more unsaturated, the better -2+ covalent bonds23
4896287140saturated fatty acidsLIPIDS - no c=c bonds -solid -animal fats -cardio diseases -single covalent bond24
4896287141phospholipidsLIPIDS -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
4896287142Proteins-consists of one or more polypeptide chains folded into 3-D, shapes determines functions26
4896287143polypeptidePROTEINS polymer of amino acids27
4896287144R 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
4896287145peptide bondPROTEINS links amino group of one amino acid with the carboxyl group of another formed b dehydration synthesis rxn29
4896287146Four 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
4896287147denaturationPROTEINS -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
4896287148disulfide bridgesPROTEINS covalent bonds between sulfhydryl side groups of cysteine monomers32
4896287149nucleic acidsmacromolecules that carry and transmit the genetic code33
4896287150DNANUCLEIC ACIDS -deoxyribonucleic acid: the genetic material that is inherited from one generation to the next, deoxyribose sugar34
4896287151RNANUCLEIC ACIDS -ribonucleic acid, transcribes genetic information from the DA and directs the synthesis of proteins, ribose sugar35
4896287152nucleotideNUCLEIC 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
4896287153monomers or componentssugars: monosaccharides lipids: fatty acids proteins: amino acids nucleic acids: nucleotides37
4896287154polymer or large moleculesugars: polysaccharides lipids: triacylglycerols proteins: polypeptides nucleic acids: polynucleotides38
4896287155type of linkagesugar: glycosidic linkages lipids: ester linkages proteins: peptide bonds nucleic acids: phosphodiester linkages39
4896287156Which type of molecule includes an example with a long-chain carbon backbone?lipid40
4896287157What is the dominant element attached to the carbon backbone?hydrogen41
4896287158Which molecule have a central carbon atom with 4 different components around it?amino acids42
4896287159Which molecule have a sugar, nitrogenous base and phosphate group?nucleic acid43
4896287160What three structural groups shown do all amino acids have in common?amine, carboxyl and R group with hydrogen44
4896287161Functions 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
4896287162Chemical 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
4896287163the number of covalent bonds formed by an atom of carbon is determined bythe number of electrons in its outermost electron shell47
4896287164Proteins are able to perform man diverse biological functions becausethe are polymers formed from chemically diverse subunits which can fold into many different shapes48
4896287165The sugar subunits in the DNA backbone are joined by what type of bonds?phosphodiester bonds49
4896287166salt and vinegar preserve our food byhigh heat, low pH, and high salt concentrations50
4896287167DNA is a good for storage of energy because...Ladder structure holds same info, so if some get damaged, it can be recovered51
4896287168Advantage of fat-dense, doesn't take up a lot of room -reserved for future use -doesn't weight as much52
4896287169Carboxylic acid group53
4896287170amine group54
4896287171phosphate group55
4896287172sugar group56
4896287173nitrogen base57
4896287174starch in a chloroplast58
4896287175starch59
4896287176monosaccharide60
4896287177nucleotide61
4896287178intermediate filament62
4896287179polypeptide63
4896287180amino acid64
4896287181adipose cell with fat droplets65
4896287182triglyceride66
4896287183fatty acid67
4896287184dehydration reaction68
4896287185hydrolysis reaction69
4896287186glucose70
4896287187sucrose71
4896287188maltose72
4896287189phosphodiester bonds73
4896287190dipeptide74
4896287191how do one make a polypeptide?with two amino acid group75
4896287192glucose+fructose=lactose (sugar in milk)76
4896287193fatty acid-hydrocarbons with carbonyl group at the end of the chain77
4896287194monounsaturated fatty acid fat-one double covalent bond78
4896287195phospholipids79
4896287196steroidsbackbone of four linked carbon rings80
4896287197steroids81
4896287198nitrogen basesadenine-thymine cytosine-guanine82

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