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






2. Characteristics of polar amino acids






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






4. Fatty acid structure






5. Histidine






6. Unique feature of cysteine






7. Acidic amino acids






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






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






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






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






12. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






13. What kind of lipids compromise the lipid bilayer?






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






15. Glycosidic linkage of cellulose






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






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






18. Name for 5 membered ring






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






20. What stabilizes lipid bilayer?






21. Enzyme that hydrolyzes lactose into galactose and glucose into






22. Polar amino acids






23. 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






24. Enzyme that hydrolyzes maltose into 2 glucose molecules?






25. Name for 6 membered ring






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






27. Glycosidic linkage of lactose






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






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






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






31. Sugar with an aldehyde at the first carbon position






32. 3 physiological roles of lipids






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






34. 3 carbon triol that forms backbone of triacylglycerol






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






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






37. Molecules with the same atoms - but different bonds






38. Sulfur containing amino acids






39. Glycosidic linkage of sucrose






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






41. Hydrophilic amino acids






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






43. Enzymes that hydrolyze fats






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






45. 2 covalent bonds formed in proteins






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






47. Interconversion btw two anomers






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






49. Hydrolysis






50. 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)