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






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






3. Enzyme that hydrolyzes maltose into 2 glucose molecules?






4. Interconversion btw two anomers






5. 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






6. 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)






7. Unique feature of proline






8. Characteristics of acidic amino acids






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






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






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






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






13. 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






14. Name for 5 membered ring






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






16. Glycosidic linkage of maltose






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






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






19. 3 carbon triol that forms backbone of triacylglycerol






20. Enzymes that hydrolyze fats






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






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






23. Energy storage molecule of carbohydrates for plants






24. Enzyme that hydrolyzes lactose into galactose and glucose into






25. Histidine






26. Hydrophilic amino acids






27. 3 physiological roles of lipids






28. 4 causes of denaturation of proteins






29. Formula for urea






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






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






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






33. D and L describe what?






34. Fxn of cholesterol in the membrane?






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






36. Nonpolar - hydrophobic amino acids






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






38. Name for 6 membered ring






39. Polar amino acids






40. Glycosidic linkage of sucrose






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






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






43. What kind of lipids compromise the lipid bilayer?






44. Hydrolysis






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






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






47. Unique feature of glycine






48. Sulfur containing amino acids






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






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