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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. Acetic acid formula?






2. 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






3. 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)






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






5. What stabilizes lipid bilayer?






6. Glycosidic linkage of maltose






7. Characteristics of polar amino acids






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






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






10. Characteristics of acidic amino acids






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






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






13. Enzyme that hydrolyzes maltose into 2 glucose molecules?






14. Unique feature of proline






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






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






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






18. Nonpolar - hydrophobic amino acids






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






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






21. Polar amino acids






22. Glycosidic linkage of sucrose






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






24. Name for 5 membered ring






25. Molecules with the same atoms - but different bonds






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






27. 3 physiological roles of lipids






28. 2 covalent bonds formed in proteins






29. Energy storage molecule of carbohydrates for plants






30. Hydrophilic amino acids






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






32. Characteristics of hydrophobic amino acids






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






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






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






36. 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






37. Glyceraldehyde






38. Formula for urea






39. Hydrolysis






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






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






42. Enzyme that hydrolyzes lactose into galactose and glucose into






43. Energy storage molecule of carbohydrates for animals






44. What kind of lipids compromise the lipid bilayer?






45. Characteristic of basic amino acids






46. Glycosidic linkage of lactose






47. Unique feature of glycine






48. Basic amino acids






49. 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






50. Acidic amino acids







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