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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. Sugar with an aldehyde at the first carbon position






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






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






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






5. Sulfur containing amino acids






6. Enzyme that hydrolyzes lactose into galactose and glucose into






7. 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






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






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






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






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






12. Hydrolysis






13. 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






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






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






16. Glycosidic linkage of cellulose






17. Interconversion btw two anomers






18. Energy storage molecule of carbohydrates for animals






19. Name for 5 membered ring






20. Unique feature of proline






21. Glycosidic linkage of maltose






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






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






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






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






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






27. Naturally occurring carbohydrates are formed from what?






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






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. Histidine






31. Acetic acid formula?






32. Characteristics of polar amino acids






33. Formula for urea






34. Glycosidic linkage of sucrose






35. Characteristics of acidic amino acids






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






37. Fxn of cholesterol in the membrane?






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






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






40. Characteristics of hydrophobic amino acids






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






42. 2 covalent bonds formed in proteins






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






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






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






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






47. Molecules with the same atoms - but different bonds






48. PH at which the amino acid has a net neutral charge






49. D and L describe what?






50. Name for 6 membered ring