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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. Hydrophilic amino acids






2. 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






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






4. Unique feature of proline






5. Name for 5 membered ring






6. What configuration do all naturally occuring amino acids have?






7. Interconversion btw two anomers






8. 3 carbon triol that forms backbone of triacylglycerol






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






10. Property of fatty acids where one end is hydrophobic and the other is hydrophilic






11. 4 causes of denaturation of proteins






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






13. Diastereomers that vary in the configuration of 1 chiral center






14. 2 covalent bonds formed in proteins






15. What describes the affinity of functional groups for a proton?






16. Glycosidic linkage of sucrose






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






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






19. Name for 6 membered ring






20. Characteristics of acidic amino acids






21. Physiological pH






22. Acetic acid formula?






23. Acidic amino acids






24. Naturally occurring carbohydrates are formed from what?






25. Characteristics of hydrophobic amino acids






26. Enzyme that hydrolyzes lactose into galactose and glucose into






27. Unique feature of glycine






28. Basic amino acids






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






30. Unique feature of cysteine






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






32. Polar amino acids






33. Formula for urea






34. 2 reasons why fats have more efficient energy stores than carbs






35. Sugar with an aldehyde at the first carbon position






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






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






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






39. What stabilizes lipid bilayer?






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






41. Fatty acid structure






42. Right handed helix w/ carboxyl of one amino acid bound to the amine of another amino acid three residues away - proline never resides in this structure b/c it would place a kink in the helix






43. What kind of lipids compromise the lipid bilayer?






44. Glycosidic linkage of cellulose






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






46. Histidine






47. Glycosidic linkage of lactose






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






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






50. 3 physiological roles of lipids