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






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






3. Polar amino acids






4. Enzyme that hydrolyzes lactose into galactose and glucose into






5. Characteristics of acidic amino acids






6. 3 carbon triol that forms backbone of triacylglycerol






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






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






9. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






10. Fxn of cholesterol in the membrane?






11. Unique feature of glycine






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






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






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






15. Glyceraldehyde






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






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






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






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






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






21. Sugar with an aldehyde at the first carbon position






22. Unique feature of cysteine






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






24. What stabilizes lipid bilayer?






25. Sulfur containing amino acids






26. Glycosidic linkage of cellulose






27. 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






28. Physiological pH






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






30. D and L describe what?






31. Characteristics of hydrophobic amino acids






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






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






34. Unique feature of proline






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






36. Name for 6 membered ring






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






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






39. What kind of lipids compromise the lipid bilayer?






40. 3 physiological roles of lipids






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






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






43. Name for 5 membered ring






44. 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






45. Naturally occurring carbohydrates are formed from what?






46. 4 causes of denaturation of proteins






47. Glycosidic linkage of maltose






48. Hydrolysis






49. 2 covalent bonds formed in proteins






50. Formula for urea