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






2. Fxn of cholesterol in the membrane?






3. Histidine






4. 3 carbon triol that forms backbone of triacylglycerol






5. Unique feature of proline






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






7. Name for 6 membered ring






8. Characteristics of polar amino acids






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






10. 2 covalent bonds formed in proteins






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






12. D and L describe what?






13. Basic amino acids






14. 2 reasons why fats have more efficient energy stores than carbs






15. 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






16. Hydrolysis






17. Name for 5 membered ring






18. Nonpolar - hydrophobic amino acids






19. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






21. Glycosidic linkage of sucrose






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






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






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






25. What stabilizes lipid bilayer?






26. Naturally occurring carbohydrates are formed from what?






27. Right handed helix w/ carboxyl of one amino acid bound to the amine of another amino acid three residues away - proline never resides in this structure b/c it would place a kink in the helix






28. Characteristics of acidic amino acids






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






30. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






31. Interconversion btw two anomers






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






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






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






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






36. Characteristics of hydrophobic amino acids






37. Hydrophilic amino acids






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






39. Characteristic of basic amino acids






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






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






42. 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






43. Formula for urea






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






46. Unique feature of cysteine






47. Enzyme that hydrolyzes lactose into galactose and glucose into






48. Sulfur containing amino acids






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






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







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