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






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






3. Characteristics of acidic amino acids






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






5. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






6. Interconversion btw two anomers






7. Name for 6 membered ring






8. Unique feature of glycine






9. Energy storage molecule of carbohydrates for animals






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






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






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






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






14. 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






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






16. Fxn of cholesterol in the membrane?






17. Hydrophilic amino acids






18. 3 carbon triol that forms backbone of triacylglycerol






19. Unique feature of proline






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






21. Name for 5 membered ring






22. Glycosidic linkage of lactose






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






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






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






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






27. Molecules with the same atoms - but different bonds






28. 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)






29. Hydrolysis






30. Unique feature of cysteine






31. Characteristics of hydrophobic amino acids






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






33. What stabilizes lipid bilayer?






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






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






36. 2 covalent bonds formed in proteins






37. Sugar with an aldehyde at the first carbon position






38. 3 physiological roles of lipids






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






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






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






42. Physiological pH






43. Histidine






44. Sulfur containing amino acids






45. Formula for urea






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






47. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






49. Acetic acid formula?






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