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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. Hydrolysis






2. 4 causes of denaturation of proteins






3. 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






4. 3 physiological roles of lipids






5. Formula for urea






6. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






8. Nonpolar - hydrophobic amino acids






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






10. 2 reasons why fats have more efficient energy stores than carbs






11. What stabilizes lipid bilayer?






12. Glyceraldehyde






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






14. Name for 6 membered ring






15. Unique feature of proline






16. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






18. 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






19. Acetic acid formula?






20. 2 covalent bonds formed in proteins






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






22. Fxn of cholesterol in the membrane?






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






24. Glycosidic linkage of cellulose






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






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






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






28. Energy storage molecule of carbohydrates for plants






29. Naturally occurring carbohydrates are formed from what?






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






31. Sulfur containing amino acids






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






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






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






35. Unique feature of glycine






36. Polar amino acids






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






38. Name for 5 membered ring






39. Energy storage molecule of carbohydrates for animals






40. Fatty acid structure






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






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






43. D and L describe what?






44. Molecules with the same atoms - but different bonds






45. Acidic amino acids






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






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






48. Physiological pH






49. Glycosidic linkage of maltose






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