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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. Characteristics of polar amino acids






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






3. Molecules with the same atoms - but different bonds






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






5. 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)






6. Physiological pH






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






8. Sugar with an aldehyde at the first carbon position






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






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






11. Unique feature of proline






12. D and L describe what?






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






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






15. Enzymes that hydrolyze fats






16. Glycosidic linkage of sucrose






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






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






19. Characteristic of basic amino acids






20. What kind of lipids compromise the lipid bilayer?






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






22. 4 causes of denaturation of proteins






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






24. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






26. Nonpolar - hydrophobic amino acids






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






28. Sulfur containing amino acids






29. 2 covalent bonds formed in proteins






30. Characteristics of acidic amino acids






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






32. Interconversion btw two anomers






33. 3 carbon triol that forms backbone of triacylglycerol






34. 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






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






36. Name for 5 membered ring






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






38. Enzyme that hydrolyzes lactose into galactose and glucose into






39. Energy storage molecule of carbohydrates for animals






40. Hydrophilic amino acids






41. Characteristics of hydrophobic amino acids






42. Glycosidic linkage of lactose






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






44. 2 reasons why fats have more efficient energy stores than carbs






45. Histidine






46. Formula for urea






47. Glyceraldehyde






48. Fatty acid structure






49. Fxn of cholesterol in the membrane?






50. 3 physiological roles of lipids