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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. Diastereomers that vary in the configuration of 1 chiral center






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






3. Naturally occurring carbohydrates are formed from what?






4. Acidic amino acids






5. Interconversion btw two anomers






6. Characteristics of acidic amino acids






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






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






9. Basic amino acids






10. 3 physiological roles of lipids






11. Enzymes that hydrolyze fats






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






13. Formula for urea






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






15. Name for 5 membered ring






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






17. 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






18. Characteristic of basic amino acids






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






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






21. 2 covalent bonds formed in proteins






22. Molecules with the same atoms - but different bonds






23. Fxn of cholesterol in the membrane?






24. Physiological pH






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






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






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






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






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






30. Glycosidic linkage of lactose






31. Nonpolar - hydrophobic amino acids






32. 3 carbon triol that forms backbone of triacylglycerol






33. Enzyme that hydrolyzes maltose into 2 glucose molecules?






34. Enzyme that hydrolyzes lactose into galactose and glucose into






35. What stabilizes lipid bilayer?






36. Characteristics of polar amino acids






37. Name for 6 membered ring






38. Sugar with an aldehyde at the first carbon position






39. Polar amino acids






40. 4 causes of denaturation of proteins






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






42. Glycosidic linkage of maltose






43. Energy storage molecule of carbohydrates for plants






44. Hydrophilic amino acids






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






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






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






48. 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






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






50. What kind of lipids compromise the lipid bilayer?