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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. Sugar with a carbonyl group at the 2 carbon position






2. Nonpolar - hydrophobic amino acids






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






4. D and L describe what?






5. Characteristics of hydrophobic amino acids






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






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






8. 2 reasons why fats have more efficient energy stores than carbs






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






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






11. Glycosidic linkage of lactose






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






13. Enzymes that hydrolyze fats






14. Characteristics of acidic amino acids






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






16. Enzyme that hydrolyzes maltose into 2 glucose molecules?






17. Unique feature of proline






18. Naturally occurring carbohydrates are formed from what?






19. Hydrophilic amino acids






20. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






21. 2 covalent bonds formed in proteins






22. Interconversion btw two anomers






23. Glyceraldehyde






24. Sugar with an aldehyde at the first carbon position






25. Formula for urea






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






27. Hydrolysis






28. Characteristics of polar amino acids






29. Molecules with the same atoms - but different bonds






30. Histidine






31. Glycosidic linkage of maltose






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






33. Energy storage molecule of carbohydrates for plants






34. Physiological pH






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






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






37. Characteristic of basic amino acids






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






39. What kind of lipids compromise the lipid bilayer?






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






41. 3 carbon triol that forms backbone of triacylglycerol






42. 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)






43. 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






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






45. 3 physiological roles of lipids






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






47. Glycosidic linkage of cellulose






48. Fxn of cholesterol in the membrane?






49. Basic amino acids






50. Name for 5 membered ring