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






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






4. Glycosidic linkage of lactose






5. Characteristics of acidic amino acids






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






7. Naturally occurring carbohydrates are formed from what?






8. Energy storage molecule of carbohydrates for animals






9. Acidic amino acids






10. 3 carbon triol that forms backbone of triacylglycerol






11. Hydrophilic amino acids






12. Glycosidic linkage of sucrose






13. 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)






14. 2 reasons why fats have more efficient energy stores than carbs






15. Name for 5 membered ring






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






17. Physiological pH






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






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






20. Unique feature of glycine






21. Sugar with an aldehyde at the first carbon position






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






23. Fatty acid structure






24. Histidine






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






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






27. Unique feature of cysteine






28. 2 covalent bonds formed in proteins






29. Name for 6 membered ring






30. Characteristic of basic amino acids






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






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






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






34. Unique feature of proline






35. Fxn of cholesterol in the membrane?






36. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






38. Hydrolysis






39. Energy storage molecule of carbohydrates for plants






40. Interconversion btw two anomers






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






42. D and L describe what?






43. Characteristics of hydrophobic amino acids






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






45. Polar amino acids






46. 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






47. Glycosidic linkage of maltose






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






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






50. 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