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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. Acidic amino acids






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






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






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






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






6. Polar amino acids






7. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






10. Energy storage molecule of carbohydrates for plants






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






12. Enzyme that hydrolyzes lactose into galactose and glucose into






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






14. Acetic acid formula?






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






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






17. Enzymes that hydrolyze fats






18. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






19. D and L describe what?






20. Sulfur containing amino acids






21. 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






22. Unique feature of proline






23. What stabilizes lipid bilayer?






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






25. Hydrophilic amino acids






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






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






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






29. Name for 5 membered ring






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






31. Nonpolar - hydrophobic amino acids






32. Glycosidic linkage of sucrose






33. 4 causes of denaturation of proteins






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






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






36. 3 carbon triol that forms backbone of triacylglycerol






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 6 membered ring






39. Formula for urea






40. Naturally occurring carbohydrates are formed from what?






41. Glycosidic linkage of cellulose






42. 3 physiological roles of lipids






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






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






45. Energy storage molecule of carbohydrates for animals






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






47. 2 reasons why fats have more efficient energy stores than carbs






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






49. Molecules with the same atoms - but different bonds






50. Glycosidic linkage of lactose