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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. 2 covalent bonds formed in proteins






2. 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






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






4. Unique feature of proline






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






6. 3 physiological roles of lipids






7. Formula for urea






8. Glycosidic linkage of maltose






9. Molecules with the same atoms - but different bonds






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






11. Basic amino acids






12. 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






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






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






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






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






17. Fatty acid structure






18. 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






19. Glycosidic linkage of cellulose






20. Nonpolar - hydrophobic amino acids






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






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






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






24. Characteristics of hydrophobic amino acids






25. Characteristic of basic amino acids






26. Polar amino acids






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






28. Sugar with an aldehyde at the first carbon position






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






30. Acidic amino acids






31. Energy storage molecule of carbohydrates for plants






32. 3 carbon triol that forms backbone of triacylglycerol






33. Glycosidic linkage of sucrose






34. Enzymes that hydrolyze fats






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






36. Glycosidic linkage of lactose






37. Sulfur containing amino acids






38. Physiological pH






39. What stabilizes lipid bilayer?






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






41. 2 reasons why fats have more efficient energy stores than carbs






42. 4 causes of denaturation of proteins






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






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






45. What kind of lipids compromise the lipid bilayer?






46. Name for 6 membered ring






47. Interconversion btw two anomers






48. Name for 5 membered ring






49. Energy storage molecule of carbohydrates for animals






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