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MCAT Organic Chemistry 2

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What configuration do all naturally occuring amino acids have?






2. Characteristics of hydrophobic amino acids






3. Rule for all amino acids that are nonbasic and nonacidic pertaining to pI value?






4. Molecules with the same atoms and same bonds - but different bond geometries; can either be enantiomers or diastereomers






5. Generated btw either thiols on different proteins or thiols on the same protein






6. Polar amino acids






7. What kind of lipids compromise the lipid bilayer?






8. Basic amino acids






9. Enzymes that hydrolyze fats






10. 1.has partial double bond character due to resonance 2. it cannot rotate 3. amide H is someWhat acidic and can H bond






11. Structure where H bonds occur btw residues distant from each other - or on a separate chain. backbone is extended rather than coiled






12. D and L describe what?






13. What stabilizes lipid bilayer?






14. Interconversion btw two anomers






15. Separation is due to charge - with negative charge moving toward positive electrode and positive charge moving toward negative electrode






16. Unique feature of cysteine






17. Nonpolar - hydrophobic amino acids






18. Sulfur containing amino acids






19. Acetic acid formula?






20. Epimers of sugars that vary in the configuration of their anomeric carbons






21. Name for 6 membered ring






22. Amino group placed on the left of a fischer projection is a?






23. Sugar with a carbonyl group at the 2 carbon position






24. 4 causes of denaturation of proteins






25. Fatty acid w/ no double bonds and maximum number of hydrogens






26. Amino group placed on the right of a fischer projection is a?






27. The amino acid sequence of a protein that is determined by peptide bond






28. Fatty acid structure






29. Interaction btw polypeptide subunits arranged in polypeptide. can be covalent bonds or intermolecular forces - disulfide bond that does not form btw residues on the same protein affect (blank)






30. Glycosidic linkage of sucrose






31. 1. it exists in solution in equilibrium with linear form 2. mutarotation occurs readily 3. it is a reducing sugar - and reacts positively w/ Benedict's reagent






32. Unique feature of proline






33. Adjacent polypeptide strands running in the same direction in Beta pleated sheet structure






34. Formula for urea






35. Glyceraldehyde






36. Glycosidic linkage of maltose






37. Acidic amino acids






38. PH at which positive and negative charges balance to form a zwitterion






39. Unique feature of glycine






40. Molecule can act as a base and as an acid






41. (R) and (S) describe what?






42. Hydrophilic amino acids






43. Enzyme that hydrolyzes maltose into 2 glucose molecules?






44. 1. it requires an enzyme to linearize and mutarotate 2. it is not a reducing sugar and give negative Benedict's test






45. Glycosidic linkage of lactose






46. Initial folding of proteins into shapes stabilized by H bonds btw amino and carboxyl groups of backbone






47. Fatty acid w/ one or more double bonds in cis form predominately






48. Covalent bond formed btw carboxyl group of one atom and the amino group of another amino acid in an addition - elimination mechanism - enzymes are required to carry out rxn






49. Energy storage molecule of carbohydrates for animals






50. Name for 5 membered ring