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Chapter 2 vocab
| Question | Answer |
|---|---|
| enzyme | protein thar catalyzes chemical reactions for organisms |
| protein | polymer made of momomers called amino acids |
| monosaccharide | a carbohydrate with one sugar molecule |
| polysaccharide | a polymer of many monosaccharides |
| catalyst | substance that decreases activation energy and increases reaction rate in a chemical reaction |
| disaccharide | sugars formed when monosaccharides are linked |
| pH | measurement of acidity:related to free hydrogen ion concentration in a solution |
| digestion | process by which large, complex molecules are broken down into smaller molecules that can be used by cells |
| substrate | reactant in a chemical reaction upon which an enzyme acts |
| product | substance formed by a chemical reaction |
| activation energy | energy input necessary to initiate a chemical reaction |
| carbohydrate | molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches |
| nucleic acid | polymer of nucleotides; genetic material of organisms |
| ATP | (adenosine triphosphate) high- energy molecule that contains within its bonds, energy that cells can use |
| hormone | chemical signal thar us produced in one part of an organism and affects cell activity in another part |
| glycerol | three- carbon molecule found in triglycerides |
| lipid | nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils |
| monomer | molecule subunit of a polymer |
| phospholipid | molecule that forms a double- layered cell membrane |
| amino acid | molecule that makes up proteins; composed of carbon, hyrdrogen, oxygen, and sulfur |
| RNA | nucleic acid molecule that allows for the transmission of genetic information and protein synthesis |
| nucleotide | monomer that forms DNA and has a phosphate group, a sugar, and a nitrogen-containing base |
| substrate | reactant in a chemical reaction upon which an enzyme acts |
| macromolecule | a very large molecule, composed od hundreds or thousands of atoms |
| amylase | any of several digestive enzymes that break down starches |
| indicator | a substance that changes color in the presence of an acid or base |
| hydrolysis reaction | chemical reaction during which molecules of water are split into hydrogen cations |
| glycogen | a white, tastless polysaccharide |
| steroid | any of a large group of fat- soluable organic compounds |
| cholesterol | a sterol that occurs in all animale tissues functioning cheifly as a proctective agent |
| graduated cylinder | a cylindrical container used to precisely measure the volume of liquids |