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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. Name for 5 membered ring






2. Fatty acid structure






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






4. 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






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






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






7. Unique feature of cysteine






8. Hydrolysis






9. Sugar with an aldehyde at the first carbon position






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






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






12. Hydrophobic and hydrophilic interactions btw amino acids more distant from each other on the polypeptide chain






13. Formula for urea






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






15. Molecules with the same atoms - but different bonds






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






17. What kind of lipids compromise the lipid bilayer?






18. 2 covalent bonds formed in proteins






19. Polar amino acids






20. What stabilizes lipid bilayer?






21. Glycosidic linkage of lactose






22. Characteristic of basic amino acids






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






24. D and L describe what?






25. Acetic acid formula?






26. Glycosidic linkage of sucrose






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






28. 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)






29. 3 physiological roles of lipids






30. Adjacent polypeptide strands running in opposite directions in Beta pleated sheet structure






31. Naturally occurring carbohydrates are formed from what?






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






33. Sulfur containing amino acids






34. Unique feature of glycine






35. Characteristics of acidic amino acids






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






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






38. Glycosidic linkage of maltose






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






40. 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






41. Basic amino acids






42. 3 carbon triol that forms backbone of triacylglycerol






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






44. Name for 6 membered ring






45. Characteristics of hydrophobic amino acids






46. (+) and (-) describe what?






47. Enzymes that hydrolyze fats






48. Energy storage molecule of carbohydrates for plants






49. 2 reasons why fats have more efficient energy stores than carbs






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