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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. Interconversion btw two anomers






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






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






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






5. Characteristics of polar amino acids






6. Name for 5 membered ring






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






8. Formula for urea






9. Physiological pH






10. 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






11. Hydrolysis






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






13. Glycosidic linkage of cellulose






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






15. 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






16. Enzymes that hydrolyze fats






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






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






19. Polar amino acids






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






21. Hydrophilic amino acids






22. Acidic amino acids






23. Sulfur containing amino acids






24. Basic amino acids






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






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






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






28. Glyceraldehyde






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






30. Characteristics of hydrophobic amino acids






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






32. 2 covalent bonds formed in proteins






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






34. Name for 6 membered ring






35. Unique feature of proline






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






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






38. Histidine






39. Unique feature of cysteine






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






41. 3 carbon triol that forms backbone of triacylglycerol






42. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






45. Nonpolar - hydrophobic amino acids






46. Glycosidic linkage of lactose






47. 4 causes of denaturation of proteins






48. Characteristics of acidic amino acids






49. Molecules with the same atoms - but different bonds






50. Sugar with an aldehyde at the first carbon position