5 Written questions
5 Matching questions
- Uncompetitive Inhibition
- amino acid
- a N-acetyl neuraminic acid; important sugar acids in bacterial cell walls.
- b +NH3-CHR-COO-; dipolar charges neutralize each other; side chain determines the charge. Carboxylic group and amino group form the peptide bond (H2O leaves). Peptide glycosidic bonds most important; 150 in our body only 20 make proteins. you have 3AA that make a tripeptide 3^3= 27 different combinations. more than 200 AA in a protein on average.
- c The inhibitor binds to ES complex so that further reaction does not take place - either forward or backward.
- d Made up of repeating units of amino acids (about 20 types); Subunits linked by peptide bonds forming polymers; Function: structural support, antibodies, contractile fibers, toxins, transport.
- e an aggregation of two or more individual polypeptide chains; polymerase- polymeric heteromeric; hemoglobin- homomeric 4 subunits.
5 Multiple choice questions
- End-product allosterically inhibits the action of first enzyme in pathway. prevents cell from wasting resources.
- all hydrocarbons have CH2 units (bad for health); animals
- alters the topology of DNA molecules.
- most important are disaccharides; covalent linkages of two monosaccharides with the release of H2O (glycosidic bond). i.e. sucrose, lactose, maltose, etc.
- The localized twisting and folding of the polypeptide chain. A specific orientation in space. Two main types: the alpha helix and the beta sheet. Helix- parallel some of the strongest; alpha keratin-nails; spiderwebs. Pleated sheet- anti-parallel; Beta keratin- silk. 18% of all proteins are one of these two shapes; others are random coiling
5 True/False questions
Nucleic Acids → Sugar + Base + Phosphate; N-glycosidic bond- base; phosphodiester bond- phosphate
Southern Hybridization → diagnostic technique; denature and add a known fluoresced DNA. Don't have to know base structure.
Important Cofactors → NAD+, NADP+, FAD, Coenzyme A
Nucleotide → Sugar + Base + Phosphate; N-glycosidic bond- base; phosphodiester bond- phosphate
Nucleoside → Sugar + Base