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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 stabilizes lipid bilayer?






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






3. Hydrophilic amino acids






4. What kind of lipids compromise the lipid bilayer?






5. D and L describe what?






6. Sugar with an aldehyde at the first carbon position






7. 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)






8. Unique feature of proline






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






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






11. Name for 6 membered ring






12. Energy storage molecule of carbohydrates for animals






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






14. 3 carbon triol that forms backbone of triacylglycerol






15. Naturally occurring carbohydrates are formed from what?






16. Characteristics of acidic amino acids






17. Characteristics of hydrophobic amino acids






18. Carbon that in linear form has a carbonyl - or in cyclic form has a hemiacetal or an acetal






19. Fatty acid structure






20. 3 physiological roles of lipids






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






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






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






24. Enzyme that hydrolyzes maltose into 2 glucose molecules?






25. 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






26. Characteristics of polar amino acids






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






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






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






30. Name for 5 membered ring






31. Glycosidic linkage of cellulose






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






33. 2 reasons why fats have more efficient energy stores than carbs






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






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






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






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






38. Hydrolysis






39. Molecules with the same atoms - but different bonds






40. Enzymes that hydrolyze fats






41. 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






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






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






44. 2 covalent bonds formed in proteins






45. Macromolecule that performs a variety of bodily functions and is composed of up to 20 different amino acids






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






47. Energy storage molecule of carbohydrates for plants






48. Acetic acid formula?






49. Physiological pH






50. Glycosidic linkage of sucrose