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Campell Biology Chapter 5 Flashcards

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5932436750MacromoleculesVery large polymers formed by the joining of smaller monomers0
5932436751Types of Macromolecules1. Carbohydrates 2. Nucleic Acids 3. Proteins 4. Lipids1
5932436752CarbohyrdatesA cabohydrate is a biological molecule sonsistion of C, H and O atoms. Made up of Monosaccharides (single sugars), which can be joined together to polysachharides Used as energy, cell walls and plant structure. (Potatoes,Cellulose)2
5932436753Nucleic AcidsMade up of Nucleotides, and contain genetic info, energy and are responsible for energy tranfer process (DNA,RNA,ATP)3
5932436754ProteinsMade up of Amino Acids, and they are for support structure, and as a catalysts(Enzymes, skin) Enzymes, defense, storage, transport, hormonal regulation, receptors, contractile and motor support. Diverse as proteins are, they are all unbranched polymers constructed from the same set of 20 amino acids. Polymers of amino acids are called polypeptides. A protein is a biologically functional molecule that consists of one or more polypeptides, each folded and coiled into a specific three-dimensional structure.4
5932436755LipidsMade up of Glycerol and Fatty Acids. Used for energy storage, and cell membrane. (Wax, oil, fat) Do NOT form "true" polymers5
5932436756Dehydration ReactionAlso called a condensation reaction; reaction in which two molecules are covalenty bonded to each other, with the loss of a water molecule. This reaction is repeated, which creates a polymer.6
5932436757HydrolysisHydro= water lyse= dissolve Polymers are dissasembled in H2O to monomers by hydrolysis, a process that is the reverse of the dehydration reaction.7
5932436758Monosaccharides1 sugar unit; simple carbohydrates. They taste sweet and are soluble in water, classified by location of carboxyl group(-OH), 1st carbon is a aldose, ketose if at the 2nd carbon, and the number of carbons. Form rings while in water, serve as major fuel cells and raw material for building.8
5932436759TriosesGlyceraldehyde, Dihydroxyacetone9
5932436760PentosesRibose, Ribulose and Deoxyribose10
5932436761HexosesGlucose, Galactose and Fructose11
5932436762SucroseGlucose + Fructuse, used as a transport sugar used in plants, harvested for use in food12
5932436763LactoseGlucose + galactose, present in milk13
5932436764Disacchardides2 sugar units bonded by a Glycosidic Linkage14
5932436765PolysaccharidesStraight or branched chain of 100's and 100's of monosaccharides15
5932436766StarchPlant storage form of energy, unbranched coiled chains, easily hydrolized into glucose units16
5932436767CelluloseFiberlike structural material in plant cell walls, tough and invisible.17
5932436768GlycogenHighly branced chain used by animals to store energy in muscles and the liver18
5932436769ChitinA specialized polysaccharide with Nitrogen attached to glucose units, structurial material in arthropod exoskeltons and fungal cell walls19
5932436770MaltoseGlucose + glucose, present in germinating seeeds20
5932436771Fatty Acid'sLong chains of Carbon, 16-18, and Hydrogen with a COOH (Carboxyl) group at one end21
5932436772FatsA lipid, mainly used for energy storage.22
5932436773Adipose CellsTissues that the fat is stored in, used to cusion vital organs and insulate the body23
5932436774Saturated Fatty AcidsThe maximum number of hydrogen atoms possible and no double bonds, hence *saturated* with Hydrogen. SF is solid at room temperature cause the carbonskeletons of the s.fatty acid pack closely together.24
5932436775Unsaturated Fattty Acidshave one or more double bonds, formed by the removal of H atoms from C skeleton. Wherever there is a cis = in the hydrocarbon chain the structure will have a kink. The kink is respsible for the unsat.F not being able to pack tightly to gether as a SF. UFare called unsaturated fats or oils, and are liquid at room temperature. Plant fats and fish fats are usually unsaturated.25
5932436776HydrogenationThe process of converting unsaturated fats to saturated fats by adding hydrogen. Hydrogenating vegetable oils also creates unsaturated fats with trans double bonds. These trans fats may contribute more than saturated fats to cardiovascular disease.26
5932436777Essential Fatty acidsCertain unsaturated fatty acids are not synthesized in the human body. These must be supplied in the diet. These essential fatty acids include the omega-3 fatty acids, required for normal growth, and thought to provide protection against cardiovascular disease.27
5932436778PhospholipidsConsist of 2 fatty acids, 1 glycerol, and 1 small polar Phosphate group. Produces a hydrophillic head and 2 hydropobic tails. Spontaneously form micelles or lipid bilayers, the basis of biological membranes28
5932436779WaxesWater repellant coatings, formed by long chain fatty acids to long chain alchohols. Plant and animal coverings29
5932436780SteroidsLipids characterized by a carbon skeleton consisting of four fused rings. Incudes cholesterol, vitamin D, and sex hormones30
5932436781CholesterolAn important steroid, is a componet in animal cell membranes31
5932436782EnzymesBiological catalysts32
5932436783Amino AcidsSmall organic molecules with an amino group(NH2), a carboxyl group(Cooh), and one of 20 varying R groups. There are 20 different amino acids, these common amino acids are grouped into five classes based on side groups; nonpolar amino acids, polar amino acids, charged amino acids.33
5932436784Peptide BondIs formed when Dehydration Reaction between the carboxyl group (-) of one AA is positioned to adjacent to the amino group (+) of the other. Through repition of this process a polypeptid is formed. At one end of the PP - chain is a carboxyl end (C- terminus) and at the other end a (N- terminus)34
5932436785Functional ProteinA functional protein consists of one or more polypeptides precisely twisted, folded, and coiled into a unique shape.35
5932436786Protein DenaturationHigh temperature or changes in PH can cause a loss of protein's normal 3-D shape, normal function is lost, which is often irreversible.36
5932436787ChaperoninsProtein molecules that promote and assist the proper folding of other proteins.37
5932436788NucleotidesMonomers of Nucleic acids38
5932436789PolynucleotidesPolymers of nucleic acids39
5932436790Nucleic AcidsTwo types DNA and RNA.40
5932436791DNAA double stranded polynucleotide helix carrying encoded hereditary instructions. Sugar is deoxyribose, Nitrogenous bases AGCT. Bases are held together by hydrogen bonds and van der Waals interactions between the stacked bases. Provides directions for the replication of itself and RNA, using mrna.41
5932436792RNAA single stranded polynucleotide chain which functions in translating the code to build proteins. Sugar is ribose, Nitrogenous bases - AGCU, Single Strand42
5932436793Nucletotide StructureA 5-carbon sugar (ribose or deoxyribose), a nitrogen base, and one or more phosphate groups. The portion of a nucleotide without a phosphate group is called a nuceloside.43
5932437363Lipidsare a diverse group of hydrophobic molecules, that does not include TRUE polymers.44
5932440569What is the hydrophobic behavior of Lipids based on?They may have som polar bonds, but consist mostly of hydrocarbonregions45
5932445362What is a Glycerol?is an alcohol (-OH = hydroxyl group)46
5932449876What are hydrogen bonds?a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.47
5932485764Hydrogen bond closerA special type of dipole-dipole force arises between molecules that have an H atom bonded to a small, highly electronegative atom with lone electron pairs, specifically N, O, or F. The H¬N, H¬O, and H¬F bonds are very polar. When the partially positive H of one molecule is attracted to the partially negative lone pair on the N, O, or F of another molecule, a hydrogen bond (H bond) forms48
5944804425What is a Glycosidic bondn chemistry, a glycosidic bond or glycosidic linkage is a type of covalent bond that joins a carbohydrate (sugar) molecule to another group, which may or may not be another carbohydrate.49
5944959908antibodyability to recognize and bind to antigen (exogenous ones or endogenous ones; Some antigens start out as exogenous, and later become endogenous for example, intracellular viruses). Antibody binds to antigen and marks for destruction.50
5944989923protein structureprimary, secondary, tertiary, (quartenary)51
5944991514primary structureunique sequence of amino acids.52
5945004450secondary structurethe result of hydrogen bonds vetween the repeating constitutents of the polypeptide backbone. Both O and N atoms of the BB areelectronegative, with partial negative charges. Individually these H-bonds are weak, but since they are repeated many times, over a relatively long region of the polypeptide chain, they cna support a particular shape for that part of the protein.53
5945040160tertiary structureis the overall shape of a polypeptide resulting from interactions between the side chains: R-GROUPS54
5945048790hydrophobic interactionas PP flods into its functional shape, AA with hydrophobic (=nonpolar) side chains usually end up in clusters at the core of the protein (out of contact with the water). Van der Waals interactions help hold the nonpolar amino acid side chains close together.55
5945055098disulfide bridgesForm where two cystein monomers, amino acids with sylfhydryl groups (-SH) ong their side chains, are brought close together by the folding of the protein.56
5945069749quartenary structureis the overall structure of these polypeptides.57
5946767131DenaturationDenaturation in proteins is a process in which a protein unravels, losing its specific structure and function; can be caused by high temperature, changes in pH or salt concentration. The term also referes to the separation of the two strands of the DNA 2helix caused by similar factors.58
5946811600most proteins denaturate ifheat, ph change, salt concentration, or if they are transferred from an queous environment to an organic solvent, such as ether or chloroform.59
5946828736renaturationif the denatured protein remains dissolved, it can often renature when the chemical and physical aspects of its environment are restored to normal.60
5946834090example of denaturationwhite of an egg becomes opaque during cooking because the denatured proteins are insoluble and solidify.61
5946891952chaperoninA hollow multy protein complex molecule that keeps the new polypeptid segregated from "bad influences" in the cytoplasmic environment while it folds spontaneously. (do NOT specify the final structure of a polypeptid!)62
5947086660Why does a denatured protein no longer function normally?The function of a protein is a consequence of its specific shape, which is lost when a protein becomes denatured.63
5947116553What parts of a polypeptid chain participate in that hold together the 2dary str? 3ry str?2dry: involves hydrogen bonds between atoms of the polypeptide backbone. 3ry involves bonding between atoms of the R groups of the amino acid subunits64
5947153273What if genetic mutation changes primary structure, how might it destroy the protein´s function?Primary structure, the amino acid sequence, affects the secondary structure (if any). In short, the amino acid sequence affects the shape of the protein. Because the function of a protein depends on its shape, a change in primary structure can destroy a protein´s function.65
5947191900protein synthesis1. synthesis of mRNA in the nucleus 2. mRNA moves via nuclear pore into cytoplasm 3. Synthesis of protein on ribosome66
5947270824proc. cells protein synthese`?lack nucley but still use RNA to convey a message from the DNA to ribosomes and other cellular equipment that translate the coded information into amino acid sequences...67
5947288209cytosine68
5947302512adenine69
5947293090thymine70
5947359529guanin71
5947392869polynucleotids are also callednucleic acids.72
5947403630a polynucleotide consists ofthree parts: 1. nitrogenous base, 2. pentose, 3. phosphate group73
5947422199nucleosideonly 1 and 2 (nitrogenous base and pentose)74
5947430765families of nigrogenous bases:1. pyrimidines- 6-membered ring of C and N atoms: CTU 2. purines: are larger with a 6-membered ring fused to a 5-membered ring AG75
5947461842thymineonly found in DNA76
5947465513uracilurNa ;)77

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