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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. What kind of lipids compromise the lipid bilayer?






2. Interconversion btw two anomers






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






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






5. D and L describe what?






6. Fxn of cholesterol in the membrane?






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






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






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






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






11. Sulfur containing amino acids






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






13. Name for 6 membered ring






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






15. Unique feature of glycine






16. 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






17. What stabilizes lipid bilayer?






18. Physiological pH






19. Unique feature of proline






20. Acetic acid formula?






21. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






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






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






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






27. Basic amino acids






28. Hydrolysis






29. Unique feature of cysteine






30. 4 causes of denaturation of proteins






31. 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






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






33. Glycosidic linkage of cellulose






34. Glyceraldehyde






35. Fatty acid structure






36. (R) and (S) describe what?






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






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






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






40. Characteristics of polar amino acids






41. Naturally occurring carbohydrates are formed from what?






42. Characteristics of hydrophobic amino acids






43. Name for 5 membered ring






44. Acidic amino acids






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






46. Glycosidic linkage of lactose






47. Glycosidic linkage of sucrose






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






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






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