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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. Glycosidic linkage of cellulose






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






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






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






6. Nonpolar - hydrophobic amino acids






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






8. Energy storage molecule of carbohydrates for animals






9. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






10. Fatty acid structure






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






12. Sugar with an aldehyde at the first carbon position






13. Hydrophilic amino acids






14. 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)






15. Acidic amino acids






16. 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






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






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






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






20. Name for 6 membered ring






21. 4 causes of denaturation of proteins






22. PH at which positive and negative charges balance to form a zwitterion






23. Molecules with the same atoms - but different bonds






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






25. Formula for urea






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






27. Energy storage molecule of carbohydrates for plants






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






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






30. 3 physiological roles of lipids






31. Glycosidic linkage of sucrose






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






33. Unique feature of cysteine






34. Enzymes that hydrolyze fats






35. Characteristics of acidic amino acids






36. Histidine






37. Acetic acid formula?






38. Sulfur containing amino acids






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






40. Interconversion btw two anomers






41. Glyceraldehyde






42. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






45. Unique feature of proline






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






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






48. Polar amino acids






49. Enzyme that hydrolyzes lactose into galactose and glucose into






50. Unique feature of glycine