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3.2 Terms
Term | Definition |
---|---|
carbohydrate | organic compounds composed of carbon, hydrogen, and oxygen in a ratio of about one carbon atom to two hydrogen atoms to one oxygen atom. the number of carbons very |
monosaccharide | a monomer of a carbohydrate (simple sugar) |
disaccharide (double sugar) | two monosaccharides combined in a condensation reaction to form this |
polysaccharide | a complex molecule compose of three or more monosaccharides |
protein | organic compounds composed mainly of carbon, hydrogen, oxygen, and nitrogen |
amino acid | the linkage of monomers |
peptide bond | a condensation reaction where two amino acids form a covalent bond and release a water molecule |
polypeptide | very long chains formed from amino acids |
enzyme | RNA or protein molecules that act as a biological catalyst |
substrate | the reactant being catalyzed |
active site | folds in an enzyme with a shape that allows the substrate to fit |
lipid | large nonpolar molecules that do not dissolve in water |
fatty acid | unbranched carbon chains that make up most lipids |
phospholipid | has two fatty acids attached to a molecule of glycerol |
wax | a type of structural lipid consisting of a long fatty-acid chain joined to a long alcohol chain |
steroid | molecules that are composed of four fused carbon rings with various functional groups attached to them |
nucleic acid | very large and complex organic molecules that store and transfer important information in the cell |
deoxyribonucleic acid (DNA) | contains information that determines the characteristics of an organism and directs its cell activity |
ribonucleic acid (RNA) | stores and transfers information from DNA that is essential for the manufacturing of proteins |
nucleotide | thousands of linked monomers. made of three main components; a phosphate group, a five-carbon sugar, and a ring-shaped nitrogenous base |