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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. Diastereomers that vary in the configuration of 1 chiral center






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






3. 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)






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






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






6. Glyceraldehyde






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






8. Enzyme that hydrolyzes maltose into 2 glucose molecules?






9. Acidic amino acids






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






11. Name for 5 membered ring






12. Histidine






13. Interconversion btw two anomers






14. 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






15. D and L describe what?






16. Fatty acid structure






17. Sulfur containing amino acids






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






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






20. Hydrophilic amino acids






21. Nonpolar - hydrophobic amino acids






22. Unique feature of cysteine






23. Glycosidic linkage of lactose






24. Energy storage molecule of carbohydrates for plants






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






26. Basic amino acids






27. 3 physiological roles of lipids






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






29. Characteristics of hydrophobic amino acids






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






31. Characteristic of basic amino acids






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






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






34. 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






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






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






37. Glycosidic linkage of sucrose






38. Enzyme that hydrolyzes lactose into galactose and glucose into






39. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






41. 3 carbon triol that forms backbone of triacylglycerol






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






43. What kind of lipids compromise the lipid bilayer?






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






45. 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






46. 4 causes of denaturation of proteins






47. Characteristics of polar amino acids






48. Polar amino acids






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






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