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Biochemistry Exam 1 QUESTION & ANSWERS

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1. what is transport, give ex- amples? 2. What is a catalysis and what are two examples? 3. what is structure and give an example? 4. what is motion, provide some examples? movement of ma ... terials in an organism -hemoglobin -myoglobin -lactose permease speed up reaction rate -DNA and RNA polymerase holds something together in the body -collagen -keratin allow for muscle movement and contraction myosin (THICK) actin (THIN) 5. what is luciferin? enzyme agent 6. what are red blood cells? transport agent 7. what is keratin? structure agent 8. what are the components of amino acids? 9. explain how light is pro- duced by a firefly.. 10. what is the general struc- ture of an amino acid? 11. how is the structure of proline different from other amino acids? 12. all amino acids are chiral ex- cept for which one? carboxyl group, amino group, R group ATP as energy luciferase as enzyme and magnesium as cofactor amino group, R group, carboxyl group carboxyl, R group and NH group -it is a cyclic amino acid Glycine 13. 13. what are the five basic groups of amino acids? 14. what is the smallest amino acid? 15. what is the largest amino acid? 16. what are some examples of nonpolar, aliphatic R groups? 17. what are some examples of nonpolar, aromatic R groups? 18. what are some examples of polar, uncharged R groups? 19. what do aromatic R groups and aliphatic R groups have in common? 20. what do uncharged, posi- tively charged and negative- ly charged R groups have in common? 21. what are some examples of positively charged R groups? 22. what are some examples of negatively charged R groups? -nonpolar, aliphatic (7) -nonpolar, aromatic (3) -polar, uncharged (5) -polar, positively charged (3) -polar, negatively charged (2) Glycine Tryptophan glycine, alanine, proline, valine, leucine, isoleucine, and methionine (GAP VILM) phenylalanine, tyrosine, and tryptophan (PTT) serine, threonine, cysteine, asparagine, gluta- mine (CATS G) they are both nonpolar and hydrophobic they are polar, soluble in water lysine, arginine, and histidine (LAH) aspartate and glutamate (AG) 23. what is the difference in cysteine reduced and oxi- dized reduced- hydrogen bonds with sulfur oxidized- no hydrogen bonds with sulfur 24. what are ampholytes? A compound that has both acidic and basic groups 25. what is the average mole- 138 da cular weight of an amino acids? 26. how to name a peptide... start from the amino terminus to carboxyl-ter- minus 27. what is PI value? how do isoelectric point you find it? pI=pKa1+pKa2 / 2 28. what are peptides? small condensation products of amino acids 29. what is lost during the for- water mation of peptides? [Show More]

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