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MCAT Organic Chemistry 2

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 30 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. Macromolecule that performs a variety of bodily functions and is composed of up to 20 different amino acids






2. Interconversion btw two anomers






3. What kind of lipids compromise the lipid bilayer?






4. Glyceraldehyde






5. Glycosidic linkage of maltose






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






7. Sulfur containing amino acids






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






9. 3 carbon triol that forms backbone of triacylglycerol






10. Naturally occurring carbohydrates are formed from what?






11. Enzyme that hydrolyzes maltose into 2 glucose molecules?






12. Fatty acid structure






13. 2 covalent bonds formed in proteins






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






15. Enzymes that hydrolyze fats






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






17. Characteristics of polar amino acids






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






19. Acetic acid formula?






20. Nonpolar - hydrophobic amino acids






21. 2 reasons why fats have more efficient energy stores than carbs






22. Physiological pH






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






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






25. Name for 6 membered ring






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






27. 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






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






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






30. Unique feature of proline






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






32. Histidine






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






34. Fxn of cholesterol in the membrane?






35. Glycosidic linkage of lactose






36. Hydrolysis






37. Characteristic of basic amino acids






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






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






40. 3 physiological roles of lipids






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






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






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






44. Energy storage molecule of carbohydrates for animals






45. Formula for urea






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






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






48. Characteristics of acidic amino acids






49. 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)






50. 2 things that accelerate the rate of hydrolysis for peptide cleavage?