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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. Interconversion btw two anomers






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






3. Enzymes that hydrolyze fats






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






5. 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






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






7. Glycosidic linkage of sucrose






8. Storage form of fatty acid that is composed of 3 esterified fatty acid to a glycerol molecule






9. Acidic amino acids






10. 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)






11. 2 reasons why fats have more efficient energy stores than carbs






12. Characteristics of polar amino acids






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






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






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






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






17. Sulfur containing amino acids






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






19. Glycosidic linkage of maltose






20. 3 carbon triol that forms backbone of triacylglycerol






21. Unique feature of proline






22. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






24. Glycosidic linkage of cellulose






25. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






26. Hydrolysis






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






28. Characteristic of basic amino acids






29. 2 covalent bonds formed in proteins






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






31. Molecules with the same atoms - but different bonds






32. Characteristics of acidic amino acids






33. Nonpolar - hydrophobic amino acids






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






35. Name for 6 membered ring






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






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






38. 3 physiological roles of lipids






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






40. 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






41. What kind of lipids compromise the lipid bilayer?






42. Unique feature of cysteine






43. Glyceraldehyde






44. Characteristics of hydrophobic amino acids






45. Energy storage molecule of carbohydrates for plants






46. Physiological pH






47. Sugar with an aldehyde at the first carbon position






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






49. D and L describe what?






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