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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. What kind of lipids compromise the lipid bilayer?






2. Nonpolar - hydrophobic amino acids






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






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






5. Unique feature of proline






6. Enzyme that hydrolyzes maltose into 2 glucose molecules?






7. Fxn of cholesterol in the membrane?






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






9. Glyceraldehyde






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






11. Characteristics of hydrophobic amino acids






12. Energy storage molecule of carbohydrates for animals






13. Enzyme that hydrolyzes lactose into galactose and glucose into






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






15. Fatty acid structure






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






17. Polar amino acids






18. 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






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






20. Glycosidic linkage of sucrose






21. Physiological pH






22. Characteristics of acidic amino acids






23. Characteristics of polar amino acids






24. Unique feature of glycine






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






26. D and L describe what?






27. Histidine






28. Sugar with an aldehyde at the first carbon position






29. Glycosidic linkage of cellulose






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






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






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






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






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






35. 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






36. 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)






37. Enzymes that hydrolyze fats






38. Name for 6 membered ring






39. Molecules with the same atoms - but different bonds






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






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






42. Formula for urea






43. Basic amino acids






44. Naturally occurring carbohydrates are formed from what?






45. 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






46. Hydrophilic amino acids






47. Acidic amino acids






48. Unique feature of cysteine






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






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