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






2. Sulfur containing amino acids






3. 3 physiological roles of lipids






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






5. Basic amino acids






6. Glycosidic linkage of lactose






7. Name for 6 membered ring






8. What stabilizes lipid bilayer?






9. Physiological pH






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






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






12. Structure where H bonds occur btw residues distant from each other - or on a separate chain. backbone is extended rather than coiled






13. Characteristics of acidic amino acids






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






15. 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)






16. Polar amino acids






17. Hydrophilic amino acids






18. Hydrolysis






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






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






21. Sugar with an aldehyde at the first carbon position






22. 4 causes of denaturation of proteins






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






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






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






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






27. Enzymes that hydrolyze fats






28. Characteristics of hydrophobic amino acids






29. Glyceraldehyde






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






31. Formula for urea






32. Histidine






33. Energy storage molecule of carbohydrates for plants






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






35. Molecules with the same atoms - but different bonds






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






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






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






39. Unique feature of glycine






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






41. Glycosidic linkage of maltose






42. Glycosidic linkage of sucrose






43. 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






44. Nonpolar - hydrophobic amino acids






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






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






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






48. Naturally occurring carbohydrates are formed from what?






49. 3 carbon triol that forms backbone of triacylglycerol






50. Enzyme that hydrolyzes maltose into 2 glucose molecules?