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4711421774Emergent PropertiesA property that comes about when an organism joins a larger environment. It is in order for an organism to adapt to a new or different environment for survival. It is a property that a collection or complex system has, but the individual members do not have0
4711458227Negative FeedbackA mechanism that reacts to a decrease in function and occurs in response to a stimulus to stabilize the system. It is when an ideal state is disturbed, and a stimulus causes something to occur that brings the environment back to its ideal state.1
4711458781Prokaryotic CellsA single celled organism without a membrane bound nucleus. The DNA is located in the cytoplasm.2
4711459136Electron CellsA grouping of electrons surrounding the nucleus of an atom; the chemical properties of an atom are determined by the outermost electron shell3
4711459494Valence ElectronsAn electron of an atom located in the outermost shell of the atom. It can be transferred to or shared with another atom during chemical bonding4
4711459812Polar Covalent BondA chemical bond where a pair of electrons is unequally shared between two atoms since one atom spends a longer duration with the electrons than the other atom. H2O has a polar covalent bond5
4711460561ElectronegativityThe measure of tendency of an atom to attract a bonding pair of electrons6
4711460759Hydrogen BondA chemical bond that is weak and between an electronegative atom like fluorine, oxygen, nitrogen, or hydrogen bonding to another electronegative atom. It is responsible for the properties of water and other biological molecules.7
4711460760CohesionForce of attraction that holds the molecules of a given substance together. Solids have the strongest bond, and it becomes weaker between liquids and gases8
4711460940AdhesionForce of attraction between unlike molecules or an attration between the surfaces of contacting bodies. It is binding one cell to another cell or a cell to a surface9
4711460941Polar MoleculeMolecule with a net dipole as a result of the oppsite charges (having a partial positive and partial negative charges) from polar bonds arranged asymmetrically like H2O10
4711466398Kinetic EnergyEnergy that a body possesses by virtue of being in motion11
4711466975Evaporative CoolingA reduction in temperature resulting from the evaporation of a liquid, it removes latent heat from the surface from which evaporation takes place12
4711469294Aqueous SolutionSolution in which the solvent is water, usually shown in chemical equations by (aq) to the relevant chemical formula13
4711469478Hydration ShellWhen in an aqueous solution, the partially positive H atom surround the solute (creating a shell) and attaches to make binds with the atoms of a solute which breaks them apart making them a part of the solution14
4711469692HydrophillicHaving an affinity for water, readily absorbing or dissolving in water15
4711469693HydrophobicRepelling, tending not to combine with, or incapable of dissolving in water16
4711470153ColloidA system in which finely divided particles are dispersed within a continuous medium in a manner that prevents them from being filtered easily or settled rapidly17
4711470451Hydronium IonA common name for the aqueous cation H3O+, the type of oxonium ion produced by protonation of water18
4711470788Hydroxide IonA diatomic anion consisting of an oxygen and hydrogen atom held together by a covalent bond19
4711470969Organic ChemistryBranch of chemistry concerned with the compounds of arbon. It is originally confined to compounds produced by living organisms but are now extended to include man-made substances based on carbon, such as plastics20
4711470970HydrocarbonsOrganic compounds like benzene and methane. These compounds only contain hydrogen and carbon21
4711471436Structural IsomersMolecules that have the same molecular formula but have different molecular structures. They could possibly contain different functional groups22
4711471619Geometric IsomersChemical compounds that have the same molecular formula as another but different geometric configuration. This is when atoms or groups of atoms are attached in different spatial arrangements on either side of a bond or ring23
4711471893EnantiomersIt is either a pair of crystals, molecules, or compounds that are mirror images of each other, but not identical24
4711472190Functional GroupsAn atom or group of atoms, such as a carboxyl group in an organic compound that defines the structure of a family of compounds and determines the properties of the family25
4711472642Adenosine TriphosphateA nucleotide that is primary source of energy in all living cells because of its function in donating a phosphate group during biochemical activities. It is composed of adenosine, ribose, and 3 phosphate groups and are formed by enzymatic reactions from adenosine diphosphate and an orthophosphate26
4711473082Condensation ReactionA reaction in which two molecules combine to form a larger molecule, producing a small molecule like H2O as a byproduct27
4711473455Dehydration ReactionsA chemical reaction that involves the loss of a water molecule from the reactant28
4711473556EnzymesAny numerous compounds that are produced by living organisms and function as biochemical catalysts. Some enzymes are simple proteins and others consist of a protein linked to one or more non protein groups29
4711473888MacromoleculesMolecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer30
4711474104MonosaccharidesAny of several carbohydrates, such as tetroses, pentoses, and hexoses that cannot be broken down to simpler sugars by hydrolysis. This is also known as a simple sugar31
4711474715DisaccharideAny class of sugars, like maltose, lactose, and sucrose, having two linked monosaccharides units per molecule32
4711475022Glycosidic Linkage(Glycosidic Bond) A type of covalent bond that joins a carbohydrate (sugar) molecule to another group, which may more may not be another carbohydrate33
4711475635PolysaccharidesAny class of carbohydrates, such as starch cellulose, consisting of a number of monosaccharides joined by glycosidic bonds34
4711475636CelluloseA polysaccharide (C6H10O5) tha is composed of glucose monomers (long unbranched chains) and is the main constituent of the cell walls of plants. It is used in the manufacture of numerous products, including paper, textiles, pharmaceuticals, and insulation35
4711475904Fatty AcidAny large group of monoprotic acids, especially those found in animal and vegetable fats and oils. They are characteristically made up of saturated or unsaturated aliphatic compounds with an even number of carbon atoms, this group of acids include palmitic, stearic, and oleic acids36
4711476099TriacylglycerolAny ester of glycerol and one or more carboxylic acids, in which each glycerol molecule has combined with 3 carboxylic (fatty) acid molecules. Most natural fats and oils are triglycerides37
4711477083Saturated Fatty AcidA fatty acid whose carbon chain cannot absorb any more hydrogen atoms; found chiefly in animal fats38
4711478472Unsaturated Fatty AcidA fatty acid whose carbon chain can absorb additional hydrogen atoms39
4711478744PhospholipidAny various phosphorous-containing lipids, such as lecithin and cephalin, that are composed mainly of fatty acids, a phosphate group, and a simple organic molecule (nitrogenous base); important constituents of all membranes40
4711478907SteroidsAny large class of organic compounds with a characteristic molecular structure containing four rings or carbon atom (3 six-membered and 1 five); many include hormones, alkaloids, and vitamins41
4711479227PolypeptidesAny group of natural or synthetic polymers made up of amino acids chemically inked together by peptide bonds; this class includes proteins42
4711479228Amino AcidAny class of organic compounds that contains at least one amino group, -NH2, and one carboxyl group - COOH; the alpha-amino acids, RCH(NH2)COOH, are the building blocks from which proteins are constructed43
4711479707Peptide BondChemical bond between the carboxyl groups an amino groups of neighboring amino acids, forming an amide group and constituting the primary linkage of all protein structures44
4711480232Deoxyribonucleic Acid(DNA) An extremely long, double-stranded nucleic acid molecule arranged as a double helix that is the main constituent o the chromosome and that carries the genes as segments along its strands45
4711481135Ribonucleic AcidAny class of single-stranded nuclei acid molecules of ribose and uracil; important in protein synthesis an in the transmission of genetic information transcribed from DNA46
4711481521PolynucleotidesMolecular chain of nucleotides chemically bonded by a series of ester linkages between the phosphoryl group of one nucleotide and the hydroxyl group of the sugar in the adjacent nucleotide, as in DNA or RNA47
4711481895PyrimidineAny group of organic compounds having a single ring with alternating carbon and nitrogen atoms; includes the bases of cytosine, thymine, and uracil, which are components of nucleic acids48
4711483682PurineA white, crystalline compound, C3H4N4, from which is derived a group of compounds including uric acid, xanthine, and caffeine49

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