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






2. 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






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






4. 3 physiological roles of lipids






5. Glycosidic linkage of maltose






6. Sulfur containing amino acids






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






8. 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






9. Fatty acid structure






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






11. Unique feature of proline






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






13. Molecules with the same atoms - but different bonds






14. Interconversion btw two anomers






15. Unique feature of glycine






16. Formula for urea






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






18. Characteristics of acidic amino acids






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






20. Energy storage molecule of carbohydrates for plants






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






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






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






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






25. Hydrophilic amino acids






26. 2 reasons why fats have more efficient energy stores than carbs






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






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






29. Physiological pH






30. Fxn of cholesterol in the membrane?






31. Enzymes that hydrolyze fats






32. 2 covalent bonds formed in proteins






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






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






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






36. Glyceraldehyde






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






38. D and L describe what?






39. Enzyme that hydrolyzes maltose into 2 glucose molecules?






40. Characteristics of polar amino acids






41. Name for 6 membered ring






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






43. Name for 5 membered ring






44. Histidine






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






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






47. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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. What stabilizes lipid bilayer?