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AP Biology Chapter 3 Flashcards

AP Biology Mader 11th ed. Chapter 3

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4786317629ADP (adenosine diphosphate):nucleotide with two phosphate groups that can accept another phosphate group and become ATP 560
4786317630Amino acid:organic molecule composed of an amino group and an acid group; covalently bonds to produce peptide molecules. 501
4786317631ATP (adenosine triphosphate):nucleotide with three phosphate groups. The breakdown of ATP into ADP + P makes energy available for energy-requiring processes in cells. 552
4786317632Biomolecule:organic molecules such as proteins, nucleic acids, carbohydrates, and fats. 383
4786317633Carbohydrate:class of organic compounds that typically contain carbon, hydrogen, and oxygen in a 1:2:1 ratio; includes the monosaccharides, disaccharides, and polysaccharides. 414
4786317634Cellulose:a polysaccharide that is the major complex carbohydrate in plant cell walls, and chitin. 445
4786317635Chaperone protein:molecule that directs the folding of polypeptides. 536
4786317636Chitin:strong but flexible nitrogenous polysaccharides found in the exoskeleton of arthropods and in the cell walls of fungi 447
4786317637Coenzyme:non-protein organic molecule that aides the action of the enzymes to which it is loosely bound. 548
4786317638Complementary base pairing:hydrogen bonding between particular purines and pyrimidines; responsible for the structure of DNA, and some RNA, molecules. 559
4786317639Dehydration reaction:chemical reaction in which a water molecule is released during the formation of a covalent bond. 4010
4786317640Denatured:loss of protein's or enzyme's normal shape so that it no longer functions; usually caused by a less than optimal pH and temperature. 5311
4786317641Deoxyribose:pentose sugar found in DNA 4212
4786317642Disaccharide:sugar that contains two monosaccharide units; e.g. maltose 4213
4786317643DNA (deoxyribonucleic acid)nucleic acid polymer produced from covalent bonding of nucleotide monomers that contain the sugar deoxyribose; the genetic material of nearly all organisms 5414
4786317644Enzyme:organic catalyst, usually a protein, that speeds a reaction in cells due to its particular shape 4115
4786317645Fat:organic molecule that contains glycerol and three fatty acids; energy storage molecule 4616
4786317646Fatty acid:molecule that contains a hydrocarbon chain and ends with an acid group 4617
4786317647Fibrous protein:a protein that has only a secondary structure; generally insoluble; includes collagens, elastins, and keratins 5118
4786317648Functional group:specific cluster of atoms attached to the carbon skeleton of organic molecules that enters into reactions and behaves in a predictable way 3919
4786317649Globular protein:most of the proteins in the body; soluble in water or salt solution; includes albumins, globulins, histones 5220
4786317650Glucose:six-carbon monosaccharide; used as an energy source during cellular respiration and as a monomer of the structural polysaccharides. 4221
4786317651Glycerol:three-carbon carbohydrate with three hydroxyl groups attached; a component of fats and oils 4622
4786317652Glycogen:storage polysaccharide found in animals; composed of glucose molecules joined in a linear fashion but having numerous branches 4323
4786317653Hemoglobin (Hb):iron-containing respiratory pigment occurring in vertebrate red blood cells and in the blood plasma of some invertebrates 4924
4786317654Hexose:any monosaccharide that contains six carbons; examples are glucose and galactose 4225
4786317655Hydrolysis reaction:splitting of a chemical bond by the addition of water, with the H+ going to one molecule and the OH- going to the other. 4126
4786317656Hydrophilic:type of molecule, often polar, that interacts with water by dissolving in water and/or by forming hydrogen bonds with water molecules. "Water loving" 4027
4786317657Hydrophobic:type of molecule, that is typically nonpolar, and therefore does not interact easily with water. "afraid of water" 4028
4786317658Inorganic chemistry:branch of science that studies the chemical reactions and properties of all of the elements, except hydrogen and carbon 3929
4786317659Isomer:molecules with the same molecular formula but different structure, and therefore a different shape. 4030
4786317660Lipid:class of organic compounds that tends to be soluble in nonpolar solvents; includes fats and oils 4531
4786317661Monomer:small molecule that is a subunit of a polymer -e.g., glucose is a monomer of starch 4032
4786317662Monosaccharide:simple sugar; a carbohydrate that cannot be broken down by hydrolysis ---e.g., glucose; also any monomer of the polysaccharides 4233
4786317663Nucleic acid:polymer of nucleotides; both DNA and RNA are nucleic acids 5434
4786317664Nucleotide:monomer of DNA and RNA consisting of a sugar, a nitrogenous base and a phosphate group 5435
4786317665Oil:triglyceride, usually of plant origin, that is composed of glycerol and three fatty acids and is liquid in consistency due to many unsaturated bonds in the hydrocarbon chains of the fatty acids. 4636
4786317666Organic chemistry:branch of science that deals with organic molecules including those that are unique to living things 3837
4786317667Organic molecule:molecule that always contains carbon and hydrogen, and often contains oxygen as well; organic molecules are associated with living things. 3838
4786317668Pentose:five-carbon monosaccharide. Examples are deoxyribose found in DNA and ribose found in RNA. 4239
4786317669Peptide:two or more amino acids joined together by covalent bonding 5040
4786317670Peptide bond:type of covalent bond that joins two amino acids 5041
4786317671Peptidoglycan:polysaccharide that contains short chains of amino acids; foundin bacterial cell walls 4442
4786317672Phospholipid:molecule that forms the bilayer of the cell's membranes; has a polar, hydrophilic head bonded to two nonpolar, hydrophobic tails. 4643
4786317673Polymer:macromolecule consisting of a covalently bonded monomers; for example, a polypeptide is a polymer of monomers called amino acids. 4044
4786317674Polypeptide:polymer of many amino acids linked by peptide bonds. 5045
4786317675Polysaccharide:polymer made from carbohydrate monomers; the polysaccharides starch and glycogen are polymers of glucose monomers 4146
4786317676Prion:infectious particle consisting of protein only and no nucleic acid 5347
4786317677Protein:polymer of amino acids; often consisting of one or more polypeptides and having a complex three dimensional shape 4948
4786317678Ribose:pentose sugar found in RNA 4249
4786317679RNA (ribonucleic acid):nucleic acid produced from covalent bonding of nucleotide monomers that contain the sugar ribose; occurs in many forms, including: messenger RNA, ribosomal RNA, and transfer RNA 5450
4786317680Saturated fatty acid:fatty acid molecule that lacks double bonds between the carbons of its hydrocarbon chain. Th chain bears the maximum number of hydrogens possible. 4651
4786317681Starch:storage polysaccharide found in plants that is composed of glucose molecules joined in a linear fashion with a few side chains 4352
4786317682Steroid:type of lipid molecule having a complex of four carbon rings -e.g., cholesterol, estrogen, progesterone, and testosterone. 4653
4786317683Trans-fat:unsaturated fatty acid chains in which the configuration of the carbon-carbon double bonds is such that the hydrogen atoms are across from each other, as opposed to being on the same side (cis) 4554
4786317684Triglyceride:neutral fat composed of glycerol and three fatty acids; typically involved in energy storage 4655
4786317685Unsaturated fatty acid:fatty acid molecule that contains double bonds between some carbons of its hydrocarbon chain; thus contains fewer hydrogens than a saturated hydrocarbon chain 4656
4786317686Wax:sticky, solid, water-repellent lipid consisting of many long-chain fatty acids usually linked to long-chain alcohols 4857

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