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






2. 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)






3. 2 covalent bonds formed in proteins






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






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






6. 4 causes of denaturation of proteins






7. Unique feature of cysteine






8. Enzyme that hydrolyzes lactose into galactose and glucose into






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






10. Acidic amino acids






11. Acetic acid formula?






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






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






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






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






16. Polar amino acids






17. 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






18. D and L describe what?






19. Glycosidic linkage of sucrose






20. Sugar with an aldehyde at the first carbon position






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






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






23. Glycosidic linkage of maltose






24. Energy storage molecule of carbohydrates for animals






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






26. 2 reasons why fats have more efficient energy stores than carbs






27. Naturally occurring carbohydrates are formed from what?






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






29. 3 physiological roles of lipids






30. Basic amino acids






31. Fxn of cholesterol in the membrane?






32. Enzyme that hydrolyzes maltose into 2 glucose molecules?






33. Fatty acid structure






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






35. Molecules with the same atoms - but different bonds






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






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






38. What kind of lipids compromise the lipid bilayer?






39. Interconversion btw two anomers






40. 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






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






42. Characteristic of basic amino acids






43. Glycosidic linkage of lactose






44. Sulfur containing amino acids






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






46. Glycosidic linkage of cellulose






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






48. Characteristics of polar amino acids






49. Unique feature of proline






50. Hydrophilic amino acids