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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. Unique feature of cysteine






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






3. Glycosidic linkage of cellulose






4. Polar amino acids






5. 3 physiological roles of lipids






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






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






8. Energy storage molecule of carbohydrates for plants






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






10. 2 reasons why fats have more efficient energy stores than carbs






11. Physiological pH






12. Fatty acid structure






13. Hydrophilic amino acids






14. Characteristics of polar amino acids






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






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. 4 causes of denaturation of proteins






18. Molecules with the same atoms - but different bonds






19. Interconversion btw two anomers






20. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






21. Unique feature of proline






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






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






24. Name for 6 membered ring






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






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






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






28. Unique feature of glycine






29. 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






30. Formula for urea






31. Enzyme that hydrolyzes lactose into galactose and glucose into






32. Basic amino acids






33. Enzymes that hydrolyze fats






34. Naturally occurring carbohydrates are formed from what?






35. Glycosidic linkage of sucrose






36. 3 carbon triol that forms backbone of triacylglycerol






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






38. 2 covalent bonds formed in proteins






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






40. Acidic amino acids






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






42. Fxn of cholesterol in the membrane?






43. 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






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






45. D and L describe what?






46. What kind of lipids compromise the lipid bilayer?






47. Sugar with an aldehyde at the first carbon position






48. Nonpolar - hydrophobic amino acids






49. Hydrolysis






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