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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. Acidic amino acids






2. Glycosidic linkage of lactose






3. Basic amino acids






4. 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






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






6. Fxn of cholesterol in the membrane?






7. Name for 5 membered ring






8. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






11. Interconversion btw two anomers






12. Glycosidic linkage of cellulose






13. Enzymes that hydrolyze fats






14. Formula for urea






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






16. Fatty acid structure






17. Energy storage molecule of carbohydrates for plants






18. 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






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






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






21. Unique feature of glycine






22. Name for 6 membered ring






23. What stabilizes lipid bilayer?






24. Energy storage molecule of carbohydrates for animals






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






26. 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)






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






28. 3 carbon triol that forms backbone of triacylglycerol






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






30. Hydrolysis






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






32. Naturally occurring carbohydrates are formed from what?






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






34. Characteristics of polar amino acids






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






36. Polar amino acids






37. Hydrophilic amino acids






38. D and L describe what?






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






40. Glycosidic linkage of maltose






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






42. 2 covalent bonds formed in proteins






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






44. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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






47. Acetic acid formula?






48. Histidine






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






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