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Chapter 2 to 3- Biology Campbell Reece Flashcards

Full notes about everything you need to know about basic biology

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8013282604compounda substance made up of atoms of two or more different elements joined by chemical bonds0
8013282605Atomic numberThe number of protons in an atom1
8013282606mass numberThe sum of protons and neutrons in the nucleus of an atom2
8013282607Isotopesatoms of the same element with different number of neutrons3
8013282608covalent bondsA chemical bond that involves sharing a pair of electrons between atoms in a molecule4
8013282609ElectronegativityA measure of the ability of an atom in a chemical compound to attract electrons5
8013282610nonpolar covalent bonda covalent bond in which the electrons are shared equally by the two atoms6
8013282611polar covalent bondA covalent bond in which electrons are not shared equally7
8013282612ionatoms which do not have the same number of electrons as protons8
8013282613CationsIons with a positive charge9
8013282614anionan ion with a negative charge10
8013282615Reactantsa substance that takes part in and undergoes change during a reaction.11
8013282616ProductsThe elements or compounds produced by a chemical reaction.12
8013282617polar moleculea difference in charge from one end of a molecule to the other13
8013282618cohesionAttraction between molecules of the same substance14
8013282619adhesionforce of attraction between different kinds of molecules15
8013282620specific heatthe amount of heat necessary to increase the temperature of a substance16
8013282621HydrophilicHaving an affinity for water or invulnerable from water17
8013282622hydroxide ionA negatively charged ion made of oxygen and hydrogen.18
8013282623pH scaleMeasures how acidic or basic a substance is19
8013282624Bufferssubstances that minimize changes in the concentration of H+ and OH-20
8013282625IsomersCompounds with the same formula but different structures.21
8013282626structural isomersdiffer in the covalent arrangements of their atoms22
8013282627Geometric isomersdiffer in arrangement around a double bond23
8013282628EnantiomersStructures that are like a mirror-image.24
8013282629functional groupsHydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate25
8013282630Macromoleculeslarge molecule formed by joining smaller organic molecules together26
8013282631polymersMolecule composed of many monomers; makes up macromolecules27
8013282632monomersA chemical subunit that serves as a building block of a polymer.28
8013282633condensation reactionchemical reaction in which 2 molecules bond to form a larger molecule by releasing water29
8013282634Hydrolysis reactionsplitting of a compound by the addition of water30
8013282635glycogenA branched glucose storage polysaccharide found in the liver and muscle of animals.31
8013282636CelluloseCarbohydrate component of plant cell walls.32
8013282637starchA storage polysaccharide in plants consisting entirely of glucose.33
8013282638chitinPolysaccharide found in arthropod exoskeletons and fungal cell walls.34
8013282639fatsalso called lipids provide energy and help your body absorb energy35
8013282640fatty acidan organic acid that is contained in lipids, such as fats or oils36
8013282641saturated fata fat that is solid at room temperature, example butter.37
8013282642unsaturated fatA fat that is liquid at room temperature and found in vegetable oils, nuts, and seeds.38
8013282643Phospholipidslipid containing a phosphate group in its molecule, cell membrane structure39
8013282644steroidsLipids in which the carbon skeleton contains four fused rings40
8013282645amino acidsThe building blocks of proteins41
8013282646polypeptideA polymer (chain) of many amino acids linked together by peptide bonds.42
8013282647peptide bondThe covalent bond between two amino acid units, formed by a dehydration reaction.43
8013282648ProteinsLarge organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.44
8013282649lipidsFats and oils45
8013282650nucleic acidMacromolecule containing hydrogen, oxygen, nitrogen, carbon, and phosphorus. DNA and RNA.46
8013282651CarbohydrateA sugar in the form of a monosaccharide, disaccharide or polysaccharide.47
8013282652primary structureamino acids bonded together to form a polypeptide chain48
8013282653Secondary structurepleated sheets and coils form by polypeptide chains49
8013282654tertiary structurethe 3 dimensional shape that allows proteins to form a globular shape50
8013282655quaternary structure2 or more polypeptide chains forming a functional protein51
8013282656fibrous proteinlong and narrow protein, insoluble in water52
8013282657Polyunsaturatedmore than 1 double bond53
8013282658Hydroxyl formula-OH54
8013282659carbonyl formulaC=O55
8013282660carboxyl formulaCOOH56
8013282661amino group formulaNH257
8013282662sulfydryl formulaSH58
8013282663phosphatePO459
8013282664Denaturationwhen protein is cooked it changes its nature permanently60
8013282665DNAA complex molecule containing the genetic information that makes up the chromosomes.61
8013282666RNAsingle-stranded nucleic acid that contains the sugar ribose62
8013282667Nucleotidea molecule made of a nitrogen base, a sugar, and a phosphate group63
8013282668Ratio of carbohydrates1:2:164
8013282669Monosaccharide formulaC6H12O665
8013282670DNAThymine:Adenine, Cytosine:Guanine66
8013282671RNAUracil:Adenine, Cytosine:Guanine67
8013282672monomers of lipidstriglyceride and phospholipids68
8013282673monomers of Nucleic acidNucleotides, ATP, Phosphate, sugar, nitrogen bases69
8013282674Monomers of carbohydratesGlucose, galactose, fructose70
8013282675polymers of carbohydratesstarch, cellulose, chitin, glycogen71
8013282676polymers of lipidssteroids, cholesterol, waxes72
8013282677Polymer of Nucleic AcidDNA and RNA73
8013282678ATPmain energy source that cells use for most of their work74
8013282679Dissociationwhen proteins separate from each other as in a quaternary stucture ex. hemoglobins75
8013282680HydrophobicHaving an aversion to water; tending to coalesce and form droplets in water.76
8013282681Dimer formula of CarbohydratesC12H22O1177
8013282682dimer of protiendipeptide78
8013282683dimer of lipidssaturated and unsaturated79
8013282684peptide formulaamino and carboxyl forms80
8013282685polymer of proteinpolypeptide, primary, secondary,tertiary,quaternary structure81
8013282686heat of vaporizationThe amount of energy required for the liquid at its boiling point to become a gas82
8013282687caloriesAmount of energy needed to heat one mL of water 1 degree celcius83
8013282688Half-lifethe time required for one half of the atoms of a radioactive substance to decay84
8013282689Radioactiveemits significant amount of energy85

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