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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. Polar amino acids






3. Fatty acid structure






4. 2 reasons why fats have more efficient energy stores than carbs






5. Acetic acid formula?






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






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






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






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






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






11. 4 causes of denaturation of proteins






12. Characteristics of acidic amino acids






13. Acidic amino acids






14. Fxn of cholesterol in the membrane?






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






16. 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)






17. Characteristics of polar amino acids






18. Molecules with the same atoms - but different bonds






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






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






21. 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






22. 3 carbon triol that forms backbone of triacylglycerol






23. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






24. Enzyme that hydrolyzes lactose into galactose and glucose into






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






26. Basic amino acids






27. Name for 5 membered ring






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






29. What kind of lipids compromise the lipid bilayer?






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






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






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






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






34. Energy storage molecule of carbohydrates for plants






35. Unique feature of glycine






36. Sugar with an aldehyde at the first carbon position






37. 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






38. What stabilizes lipid bilayer?






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






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






41. Glycosidic linkage of cellulose






42. Unique feature of cysteine






43. Glyceraldehyde






44. Glycosidic linkage of lactose






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






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






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






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






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






50. Name for 6 membered ring