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Biochemistry Flashcards

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8691656053Ionic BondingThe bonding formed by attraction of oppositely charged atoms after gain or loss of electrons.0
8691661573Covalent BondWhen two atoms share electrons to make it so that each atom has a filled outer orbital.1
8691678253Nonpolar Covalent BondBond formed when two atoms share valence electrons equally.2
8691688054Polar Covalent BondBond formed when two atoms share valence electrons unequally.3
8691693630ElectronegativityThe attraction of an atom for the electrons in a covalent bond.4
8691695600Hydrogen BondingWeak attractions between hydrogen atoms covalently bonded to one atom and attracted to another atom.5
8691714084High heat capacity, is a solvent, molecules are cohesive and adhesive, high surface tension, frozen water is less dense than liquid water, and has a high heat of vaporization.What are the properties of the water molecule that are significant to life?6
8691729952Hydrogen bonds, because polarity within a water molecule causes the hydrogen atoms in one molecule to be attracted to the oxygen atoms in other water molecules.What type of bond holds together a single water molecule?7
8691736950Hydrogen BondsWhat type of bonding can water molecules form with one another?8
8691741132Water molecules bonding via hydrogen bonds.What type of molecule is bonding? What type of bonding is this?9
8691750815SoluteThe minor component in a solution, dissolved in the solvent.10
8691754693SolventAble to dissolve other substances.11
8691759136A solutionWhat do a solute and a solvent make?12
8691763038Hydrophobic SubstanceNon-ionized and non-polar molecules (ex. oil) that cannot attract water.13
8691771578Hydrophilic SubstanceMolecules that can attract water.14
8691774114AcidsSubstances that release hydrogen ions when the dissociate in water. Have a high H+ concentration and low OH- concentration. Values are below 7.15
8691782227BasesSubstances that either take up hydrogen ions or release hydroxide ions. Have a low H+ concentration and high OH- concentration. Values are above 7.16
8695865578pHA scale used to gauge the acidity and alkalinity of solutions. Based on the dissociation (coming apart) of water molecules. Used to determine if a solution is acidic or basic. Ranges is from 0-14.17
8691791839Neutral SubstanceWhen the hydrogen ion and hydroxide ion concentrations are equal. What type of substance is this?18
8691798565BufferSubstance that keeps pH within normal limits. This helps animals keep their pH at 7.4, maintain an almost constant blood pH.19
8691817851Buffer SystemsPairs of weak acids and weak bases that work together to maintain the pH in organisms' bodies. Act like chemical sponges.20
8691828145Release a weak base to absorb the H+.What happens when there is too much acidity?21
8691836075Release a weak acid to absorb the OH-.What happens when it is too basic?22
8691880779The elements carbon (C) and hydrogen (H), and make up the cells of living things.What do organic compounds contain?23
8691896295Carbohydrates, lipids, proteins, nucleic acids.What are the four important "Life Molecules"?24
8691905180Inorganic CompoundsDo not contain carbon and hydrogen together. Examples, NaCI, H2O, CO2.25
8691913802CarbonAn element that has a valence of 4 electrons, which makes it capable of entering into 4 covalent bonds. Most versatile combining properties of any type of atom. Forms very strong COVALENT BONDS.26
8691927417Molecular FormulaRefers to the actual number of atoms each element that make up a molecule. Examples, C6H12O6 (Always alphabetical order)27
8691941078Structural FormulaRefers to a draw out molecular formula.28
8691943426IsomersMolecules that have the same molecular formula, but have different structural formulas.29
8691958465Glucose Isomers Molecular FormulaC6H12O630
8691961564Functional GroupsThese are certain groups of atoms attached to the carbon skeleton (usually replace an H). This area is usually located on the end of the molecule.31
8691979217Ionic and hydrogen bonds.What type of bonds do functional groups readily form association with other molecules?32
8691987137Functional groups define the chemical properties of organic compounds because they react in predictable ways.What do functional groups define?33
8691995650Remainder, rest of the molecule. It varies. Side chain. The R is how amino acids vary.What does "R" mean?34
8692007384Examples of PolymersDisaccharides, polysaccharides, lipids, proteins, nucleic acids.35
8692024462Examples of MonomersMonosaccharides, glycerol and fatty acids, amino acids, nucleotides.36
8692033941MacromoleculesLarge molecules, kind of polymer.37
8692040807Smaller units called monomers, small single unit molecules.What are polymers made of?38
8692048857In the bodies of organisms.Where is the "making and breaking" of polymers?39
8692057319HydroxylOH40
8692073072CarbonylCHO, or CO41
8692110696CarboxylCOOH42
8692110697AminoNH243
8692121723PhosphateOPO3 2-44
8692126439SulfhydrylSH45
8692134607Dehydration synthesis (Condensation reaction)The building process by which two monomers are chemically bonded together and a loss of water takes place. Water must be lost because each monomer must make room for a new bond to form. Example of anabolism46
8692149448HydrolysisThe breaking down (degradation) process by which the bond between monomers is broken. This reaction requires the addition of water. This occurs when a polymer is broken down (such as when we eat food). Example of catabolism.47
8692169309C,H,OWhat do carbohydrates contain?48
8692171997To provide and store energy and provide support (polysaccharides). Building blocks (monomers) are monosaccharides.What is the function of carbohydrates?49
8692185324MonosaccharidesSimple sugars containing 3-7 carbons. C,H,O ration is 1:2:1.50
8692204005GlucoseMain fuel for bodies. First energy choice, provides short term energy. Reactant in cell respiration.51
8692212008FructoseFruit sugar. Plants produce to make fruits tasty for seed dispersal.52
8692218960DisaccharidesSimple sugars composed of 2 monosaccharides linked together by dehydration synthesis. Formula = C12H22O11. Examples include maltose, lactose, and sucrose.53
8692235524PolysaccharidesComplex carbohydrates made up of hundreds of monomers linked by dehydration synthesis. Example, cellulose.54
8692245707CelluloseFound in plant cell walls, wood, repeating units of glucose. The most plentiful organic compound on Earth. Starch-energy storage molecule in plants.55
8692288168GlycogenAnimal starch. Stores in liver and muscles of vertebrates. Short term energy storage in animals. Turns into fat if not used.56
8692296965C,H,O (generally, sometimes with an exception.)What elements do lipids contain?57
8692309947Types of lipidsTriglycerides, phospholipids, steroids, waxes.58
8692322403Non-polar, do not dissolve in water. Hydrophobic.Are lipids polar or non-polar, and can they be dissolved in water?59
8692328246TriglyceridesComposed of glycerol linked to 3 fatty acid chains by dehydration synthesis.60
8692337791To cushion organs, as insulation and in long-term energy storage (adipose tissue). Buoyancy - lipids are less dense than water so they help animals float. Fats have 2x more energy than proteins and carbohydrates-provide longer term energy.What is the function of triglycerides?61
8692356171Saturated Fatty AcidsDo not contain any double bonds between the carbons. Contain maximum # of H atoms chemically possible. Found in animals, contribute to coronary heart disease, and solids at room temperature.62
8695739348Unsaturated Fatty AcidsContain one or more double bonds between the carbons. These double bonds cut down on the number of hydrogen atoms that can be attached to the carbon in the molecule. Liquids at room temperatures. Found mostly in plant and fish (oils).63
8695743603PhospholipidsLipid bonded to a phosphate group with one less fatty acid (so 2 instead of 3 fatty acid tails.) Major component of cell membranes.64
8695745924Steroids/SterolsLipids that have 4 interconnected carbon rings. Side chains of C atoms distinguish one type of ______ from another. Examples include Vitamin D, cortisone, estrogen, and cholesterol. Testosterone, cortisone, etc.65
8695751077CholesterolAn important steroid found in all animal tissue. Plants do not contain this. This steroid is a precursor from which many of the bodies steroids are constructed from. It also adds strength to the cell membrane in animal cells.66
8695756880Testosterone and EstrogenSex hormones.67
8695757335ProgesteroneProduced by the ovaries and prepares the body for pregnancy and helps maintain pregnancy.68
8695758225CortisolSecreted by adrenal cortex. Important in helping the body cope with stress.69
8695759398WaxesFatty acids combined with hydrocarbons or alcohols. Can form hard, water-repellent covering, and it helps to waterproof fur, feathers, leaves and fruit.70
8695763319ProteinsContains C,H,O,N,S. Monomers are amino acids.71
8695768157Primary Structure (1º)Type of protein structure: Amino acid sequence of polypeptide chain.72
8695769228Secondary Structure (2º)Type of protein structure: Coiling and folding produced by hydrogen bonds between non-adjacent functional groups.73
8695772632Tertiary (3º) StructureType of protein structure: Shape created by interactions between R groups and water. R groups can be polar or non-polar.74
8695778232Quaternary (4º) StructureType of protein structure: Shape created by interactions between two or more polypeptides. Not all proteins reach this step.75
8695791076# of amino acids in the chain (length), the sequence of amino acids and which ones are in the chain, and how they are folded (3D confirmation).How do proteins vary in structure?76
8695793108PolypeptideMany peptide bonds. Chain of amino acids.77
8695797849Types of bonds present between proteins.Peptide, H-bonds, van der waals attractions, disulfide bridge, ionic bonds, hydrophobic interactions.78
8695803465A mutation of DNAWhat affects the primary protein structure in regards to DNA?79
8695808150Fibrous ProteinsType of Protein: Long, narrow in shape, insoluble, regular repeating pattern of amino acids, structural jobs.80
8695809368Globular ProteinsType of protein: Spherical, soluble, irregular sequence of amino acids, all other roles.81
8695811465Functions of proteinsMajor structural component of cells (elastin, collagen, keratin). Energy source (ovalbumin and casein). Transporting substances (hemoglobin and cell membrane _____). Coordinating body hormonal activities (insulin and glucagon). Contractive movement. Immune system responses, blood clotting, transmitting signals between cells, cell division, ENZYMES.82
8695820780Nucleic AcidsContain C, H, O, N, P. Monomers are nucleotides - 3 piece unit. Contain pentose sugar, phosphate group, and nitrogenous base.83
8695827476PurinesNitrogenous base. 2 fused rings of adenine and guanine.84
8695831609PyrimadinesNitrogenous base. 1 fused ring of cytosine, thymine, and uracil.85
8695836001DNA (Deoxyribonucleic acid)5 carbon sugar is deoxyribose. Nitrogenous bases are the rungs of the ladder. Double stranded helix held together by hydrogen bonds. Is the genetic material - codes for proteins. Sides of latter are alternating deoxyribose and phosphates.86
8695845103Watson and CrickWho discovered DNA based off of Rosalind Franklin's pictures?87
8695849625RNA (ribonucleic acid)5 carbon sugar is ribose. Nitrogenous bases are adenine, guanine, cytosine, and uracil. Single stranded. Enables information in DNA to be expressed. Aids in protein synthesis.88
8695854378ATP (Adenosine Triphosphate)Energy carrier.89

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