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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 proline






2. Characteristics of polar amino acids






3. Unique feature of glycine






4. 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






5. Glycosidic linkage of lactose






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






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






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






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






10. Name for 5 membered ring






11. Name for 6 membered ring






12. Characteristics of acidic amino acids






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






14. Sulfur containing amino acids






15. 2 reasons why fats have more efficient energy stores than carbs






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






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






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






19. 3 physiological roles of lipids






20. D and L describe what?






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






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






23. 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)






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






25. Formula for urea






26. Nonpolar - hydrophobic amino acids






27. 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






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






29. Energy storage molecule of carbohydrates for animals






30. 2 covalent bonds formed in proteins






31. Interconversion btw two anomers






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






33. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






35. Storage form of fatty acid that is composed of 3 esterified fatty acid to a glycerol molecule






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






37. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






39. Glycosidic linkage of maltose






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






41. Molecules with the same atoms - but different bonds






42. Basic amino acids






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






44. Naturally occurring carbohydrates are formed from what?






45. Enzyme that hydrolyzes lactose into galactose and glucose into






46. Energy storage molecule of carbohydrates for plants






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






48. Adjacent polypeptide strands running in opposite directions in Beta pleated sheet structure






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






50. Fatty acid structure