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Biochemistry Flashcards

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8362227284carbohydrate"Compound containing carbon, hydrogen, and oxygen in the approximate ratio of C:2H:O (e.g., sugars, starches, and cellulose)"0
8362227285pHa measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.1
8362227286compoundA pure substance made of two or more elements CHEMICALLY combined.2
8362227287moleculeA neutral group of atoms joined together by covalent bonds; smallest unit of a compound joined together3
8362227288cellBasic unit of life4
8362227289calorieAmount of energy needed to raise temperature 1 gram of water 1 degree C'; A unit of heat used to measure the energy your body uses and the energy it receives from food5
8362227290energyAbility to do work or cause change6
8362227291elementA pure substance made of only one kind of atom7
8362227292phosphate bonda high-energy chemical bond that is especially important between the 2nd and 3rd phosphate groups in an ATP molecule8
8362227293starchA storage polysaccharide in plants consisting entirely of glucose.9
8362227294organicCarbon-containing10
8362227295inorganicDoes not contain carbon; Not formed from living things or the remains of living things11
8362227296synthesisCombining of small molecules or substances into larger, more complex ones; A+B=AB12
8362227297proteinA macromolecule that contains the principal components of organisms: carbon, hydrogen, oxygen, and nitrogen; performs a variety of structural and regulatory functions for cells.13
8362227298energy storagecarbohydrates and lipids14
8362227299structural support15
8362227300dehydration reactionA chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.16
8362227301biological moleculechemical compounds that provide physical structure and bring about movement, energy use, and other cellular functions in a living organism17
8362227302active siteRegion of an enzyme into which a particular substrate fits.18
8362227303activation energythe minimum amount of energy required to start a chemical reaction19
8362227304saturated fatA lipid made from fatty acids that have no double bonds between carbon atoms; A fat that is solid at room temperature and found in animal fats, lards, and dairy products.20
8362227305unsaturated fatA lipid made from fatty acids that have at least one double bond between carbon atoms; A fat that is liquid at room temperature and found in vegetable oils, nuts, and seeds.21
8362227306fatty acidBuilding Blocks of Lipids; substances produced when fats are digested; simple forms of fat that supply energy fuel for most of the body's cells; unbranched carbon chains that make up most lipids22
8362227307steroidsA type of lipid characterized by a carbon skeleton consisting of four rings with various functional groups attached.23
8362227308exothermic reactionA reaction that releases energy in the form of heat24
8362227309endothermic reactionA reaction that ABSORBS energy in the form of heat25
8362227310fructase-ase suffix Most enzymes end in "-ase" suffix, but not all enzymes. Some enzymes were named prior to the adoption of this process; "ose" turns to "ase" after decomposition reactions; structural -- what gives a macromolecule its shape [chitin]26
8362227311"ose"used in biochemistry to form the names of sugars27
8362227312chemical structureThe way atoms in a compound are bonded it represents the structure of a compound.28
8362227313covalent bondA chemical bond that involves sharing a pair of electrons between atoms in a molecule29
8362227314ionic bondFormed when one or more electrons are transferred from one atom to another30
8362227315polar moleculeMolecule with an unequal distribution of charge, resulting in the molecule having a positive end and a negative end31
8362227316hydrogen bondA type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule.32
8362227317biochemicalThe changing of organic matter into other chemical forms such as fuels.33
8362227318macromoleculeA very large organic molecule composed of many smaller molecules; a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.34
8362227319catalyst(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected35
8362227320enzymeA type of protein that speeds up a chemical reaction in a living thing36
8362227321substrateA specific reactant acted upon by an enzyme; reactant of an enzyme-catalyzed reaction37
8362227322polymerA long molecule consisting of many similar or identical monomers linked together.38
8362227323monomersmall chemical unit that makes up a polymer39
8362227324polysaccharideA polymer of thousands of simple sugars formed by dehydration synthesis; Carbohydrates that are made up of more than two monosaccharides40
8362227325disaccharideA double sugar molecule made of two monosaccharides bonded together through dehydration synthesis.41
8362227326monosacchridesingle sugar molecule42
8362227327fructoseA monosaccharide found predominantly in fruit and honey43
8362227328celluloseA large polysaccharide composed of many glucose monomers linked into cable-like fibrils that provide structural support in plant cell walls.44
8362227329lipidEnergy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.45
8362227330nucleotideA building block of DNA, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate group.46
8362227331amino acidBuilding blocks of protein47
8362227332nucleic acid(biochemistry) any of various macromolecules composed of nucleotid chains that are vital constituents of all living cells48
8362227333peptideThe chemical bond that forms between the carboxyl group of one amino acid and the amino group of another amino acid49
8362227334triglycerideComposed of three molecules of fatty acids joined to one molecule of glycerol50
8362227335dehydration synthesisA chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.51
8362227336glycerolA three-carbon alcohol to which fatty acids are covalently bonded to make fats and oils.52
8362227337phospholipidA molecule that is a constituent of the inner bilayer of biological membranes, having a polar, hydrophilic head and a nonpolar, hydrophobic tail.53
8362227338maltosea 12-carbon sugar that is formed by the union of two glucose units (a disaccharide)54
8362227339cyclicoccurring in cycles; regularly repeated55
8362227340chitina fibrous substance consisting of polysaccharides56
8362227341hydrolysisA chemical reaction that breaks bonds between two molecules by the addition of water; functions in disassembly of polymers to monomers.57
8362227342sucroseA disaccharide made of glucose + fructose; Table sugar58
8362227343glycogenA highly branched polymer of glucose containing thousands of subunits; functions as a compact store of glucose molecules in liver and muscle fibers59
8362227344hexosescarbohydrates with six carbon atoms60
8362227345enzyme activitythe ability of an enzyme to do work and is mainly dependent on substrate concentration61
8362227346enzyme substrate complexA temporary complex formed when an enzyme binds to its substrate molecule(s).62
8362227347polymerizationAn organic reaction in which many small units are joined together to form a long chain63

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