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Biomolecules Flashcards

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2042344638Adhesionattraction between molecules of different substance, particularly water molecules and other surfaces0
2042344639Boiling pointthe temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor; for water, this is 100 degrees Celcius1
2042344640Freezing pointthe temperature at which a liquid turns into a solid; the opposite of this is the melting point2
2042344641Hydrogen bonda bond that forms BETWEEN water molecules; contributes to cohesive properties; also found between bases in the structure of DNA3
2042344642HydrophilicAttracted to water; likes water; polar molecules exhibit this property4
2042344643HydrophobicRepels against water; non-polar substances like fatty acids and the tails of phospholipids (also fatty acids) exhibit this property5
2042344644SolventThe term used for a liquid or the liquid portion of a solution when dissolving things; Ex: Water6
2042344645MethaneCH4; colorless flammable gas; fart burns well because of this; simplest member of alkanes; used to compare properties of water because hydrogen bonds are NOT formed between these molecules7
2042344646Solubilityhow much substance will dissolve in a given amount of liquid8
2042344647covalent bondA chemical bond that involves sharing a pair of electrons between atoms in a molecule; the bonds WITHIN water molecules are these types of bonds9
2042344648ElectronegativityA measure of the ability of an atom in a chemical compound to attract electrons; explains why water is a polar molecules because the OXYGEN pulls electrons close to it, making it negatively charged while hydrogen becomes positively charged10
2042344649Hydrogen bondAn INTER-molecular bond that explains water's high boiling point amongst other properties of water11
2042344650permanent dipole reactionwhen water molecules align with each other, they establish a weak bond12
2042344651Covalent bonda bond between two or more atoms that is provided by electrons that travel between the atoms nuclei13
2042344652Melting pointthe temperature at which a substance changes from solid to liquid state; this is zero degrees for water14
2042344653non-polarhypdrophobic; repels water15
2042344654polarhydrophillic; attracts water16
2042344655ammoniaa molecule that consists of one nitrogen atom and three hydrogen atoms17
2042344656catabolismthe breaking down of complex molecules into simpler molecules, energy is released;18
2042344657hydrolysischemical reaction which cause molecules of water to split into hydrogen cations and hydrogen anions; type of reaction used to break down certain polymers; opposite of condensation19
2042344658MethaneChemical compound with formula CH4; simplest alkane and the main component of natural gas20
2042344659adhesionwhen water is attracted to other substances; not water21
2042344660thermalhigh heat capacity and heat of vaporization are examples of this type of property of water22
2042344661vaporisationWhen a substance converts from a solid or a liquid to a gas23
2042344662oligopeptidefewer than 20 amino acids, but more than 224
2042344663genesmade up of four bases. A's, C's, G's and T's. Unit of heredity. Made up of DNA and act as instructions to make molecules called proteins. Found in chromosomes25
2042344664codonsMade up of three bases, and one of these provides the instructions to form an amino acid. A full set of these are called a genetic code26
2042344665immunoglobinA type of protein that is also known as an antibody. They have sites at the tips of their two arms that bind to antigens on bacteria or other pathogens.27
2042344666insulinHormone secreted from the pancreas; regulates metabolism of carbohydrates and fat. Diabetes patients either don't produce enough of this, OR, their body may not respond to this properly.28
2042344667collagenClass of extracellular proteins found in animals, especially skin, bone, cartilage, tendon, and teeth. Serves as connective tissue between cells.29
2042344668substratethe molecule upon which an enzyme acts; binds to the active site; starch is an example of this if salivary amylase is the enzyme30
2042344669pHthe scale that measures how acidic or basic a liquid is;31
2070425223pHthis factor affects enzyme activity by having higher or lower concentrations of protons (hydrogen ions) that will interact with existing charges to possibly change the shape of the enzyme protein active site, rendering it unable to bind to bind to substrates and hence become denatured32
2070432111glucose33
2070433165ribose34
2070434502fatty acidsthese molecules are examples of35
2070435343glycerol"oh, oh, oh"36
2070437316dissacharideThis molecule, consisting of two monosaccharides is known, in general, as a _______37
2070448116amino acid38
2070449321starch39
2042344670disaccharidesa type of carbohydrate composed of two monosaccharides (monosaccharides are the simplest form of sugar); i.e. glucose (mono) + fructose (mono) = sucrose (di)40
2042344671condensationA type of reaction that involves to the joining of two sub-unit molecules which yields a water molecule as a result41
2042344672galactoseAbbreviated "Gal"; monosaccharide sugar, less sweet than fructose or glucose; C6H12O6; a component of the disaccharide molecule, lactose42
2042344673fructosea type of monosaccharide that is very sweet and is often blamed for unhealthy diets43
2042344674polysaccharidesnumerous chains of monosaccharides; starch is an example of this as well as cellulose and glycogen44
2042344675cellulosethe main component of cell walls and a polysaccharide45
2042344676glycogena type of polysaccharide that is the storage carbohydrate of animals; stored in the liver; composed of many units of glucose molecules; NOT stored in plants in this form, but rather as starch46
2042344677starchA polysaccharide carbohydrate (C6H10O5) consisting of a large number of glucose monosaccharide units; storage of glucose in plants47
2042344678solubilityA measure of how much solute can dissolve in a given solvent at a given temperature.48
2042344679lipidsa substance that is insoluble in water, its sub-units are glycerol and fatty acids; also known as fats or triglycerides49
2042344680triglycerideThese are formed by condensation from three fatty acids and one glycerol.50
2042344681phospholipidscomponent of the bilayer in the cell membrane; is a type of lipid (fat)51
2042344682steroidsA type of lipid characterized by a carbon skeleton consisting of four rings with various functional groups attached.52
2042344683carbon compoundcarbohydrates, lipids, nucleic acid, and proteins are all types of ____ _____; the basis of ORGANIC molecules53
2042344684hydrocarbon chainchain of carbon atoms bonded to each other and to hydrogen atoms, tail of a fatty acid *54
2042344685glycerolA three-carbon alcohol to which fatty acids are covalently bonded to make fats and oils.55
2042344686fatty acidlong chains of carbons and is present in the form of glycerides in fats and fatty oils; can be of various forms including saturated, unsaturated, mono-, poly-, cis-, and trans-56
2042344687carboxyl group-COOH; makes things "cool" like an acid:); found in amino acids and fatty acids57
2042344688saturated fatsFatty acid chains lack double bonds; therefore, the chains pack tightly, solid at room temp and bad fats, major source is animals58
2042344689unsaturated fatsA fat that has fewer hydrogen atoms because double bonds exist among some of the carbon atoms.59
2042344690monounsaturatedOnly one double bond between carbons; A fatty acid whose molecular structure includes only one double carbon bond.60
2042344691polyunsaturatedMore than one double bonds between carbons; A type of fat containing double bonds between many carbon atoms.61
2042344692cis unsaturatedHydrogen atoms are bonded to carbon atoms on the same side of a double bond.62
2042344693trans unsaturatedAre lipids that have hydrogen bonds on opposite sides of the double-bond structure63
2042344694double bondcovalent bonds linking 2 atoms in a molecule; A covalent bond in which two pairs of electrons are shared between two atoms64
2042344695obesitymedical condition in which excess body fat has a negative effect on health; quite common in the United States65
2042344696heart diseaseAlso known as Cardio Vascular Disease, disease of the heart and blood vessels of the body and brain.66
2042344697R groupa functional group that defines a particular amino acid and gives it special properties.67
2042344698amino acidsbuilding block of proteins that consists of an amine group+carboxyl group68
2042344699hydrogen bondthe attractive force between the hydrogen attached to an electronegative atom of one molecule and an electronegative atom (often oxygen) of a different molecule.69
2042344700peptide bondCovalent chemical bond formed between two amino acid molecules.70
2042344701polypeptidemain component of protein, chain of amino acids71
2042344702genesegments of DNA in chromosomes; exists in alternate forms called alleles; codes for proteins72
2042344703proteomeentire set of proteins expressed by a genome, cell, tissue or organism at a certain time.73
2042344704polypeptideA polymer (chain) of many amino acids linked together by peptide bonds.74
2042344706primary structurethe sequence of amino acids of the protein structure75
2042344707secondary structurehydrogen bond of alpha-helix and beta-pleated sheet contribute to this level of protein structure76
2042344708tertiary structure3D shape of single polypeptide using hydrogen, hydrophobic forces, ionic, covalent, disulfide bonding77
2042344709quatenary structuremulti-subunit protein and how the subunits fits together78
2042344710proteinA molecule of chains of amino acids joined together by peptide bonds79
2042344711sucrosetwo monosaccharides put together (disaccharides) Glucose + Fructose80
2042344712fructoseA 6-carbon monosaccharide in the form of a ring structure. The sweetest of all natural sugars.81
2042344713amino groupA functional group that consists of a nitrogen atom bonded to two hydrogen atoms82
2042344714transparencyAllowing light to pass through so that objects can be clearly seen on the other side; the opposite of opaque; a property of water that allows aquatic plants to photosynthesize83
2042344715cholesterolA steroid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids.84
2042344716fibrous protein(Structural proteins) Insoluble in water; chief building materials of the body; usually used to construct connective tissues, tendons, bone matrix and muscle fiber. Insoluble in water and their polypeptide chains form long strands that are parallel to each other.85
2042344717globular proteinThese proteins are water soluble and have catalytic and regulatory roles in cells; enzymes, hormones, immunoglobins are examples of these86
2042344718denaturationwhen protein or nucleic acids lose quaternary, tertiary, and secondary structures87
2042344719hemoglobinprotein that helps transport oxygen via red blood cells throughout the body88
2042344720integrinCell surface receptor proteins that are built into the plasma membrane89
2042344721electrophoresisA process where DNA fragments are separated according to size using electrical charges; A technique for separating macromolecules (proteins, RNA, DNA) on a gel using an electric field.90
2070393027substrate"A" refers to a:91
2070555454ureathe artificial production of THIS molecule provided evidence to FALSIFY the idea of VITALISM; A soluble nitrogenous waste produced in the liver by a metabolic cycle that combines ammonia with carbon dioxide;92
2070556463fournumber of bonds formed by a carbon atom93
2070558786Metabolismthe web of all the enzyme-catalysed reactions in a cell or organism.94
2070564434vitalismThe belief in a life force outside the jurisdiction of physical and chemical laws95
2070566540anabolismConstructive metabolism; the process of building up larger molecules from smaller ones.96
2070569482anabolismthe synthesis of complex molecules from simpler molecules including the formation of macromolecules from monomers by condensation reactions97
2070570488catabolismthe breakdown of complex molecules into simpler molecules including the hydrolysis of macromolecules into monomers.98
2070574580riboseyou should be able to draw this molecule; a monosaccharide that is found in DNA99
2070624729sugarmonosaccharides and disaccharides are types of ______; another word for small carbohydrates100
2070631989monomerA simple compound whose molecules can join together to form polymers101
2070634370amylose1 form of starch structure made up of linear chains of several hundred glucose molecules102
2070634588amylopectin1 form of starch structure where the glucose chains are branched. The linkage is between carbon 1 of the branch and carbon 6 of the glucose residue.103

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