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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. Characteristic of basic amino acids






2. 2 covalent bonds formed in proteins






3. Glycosidic linkage of cellulose






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






5. Molecules with the same atoms - but different bonds






6. Glycosidic linkage of sucrose






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






8. Characteristics of polar amino acids






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






10. Glyceraldehyde






11. Hydrolysis






12. Enzyme that hydrolyzes maltose into 2 glucose molecules?






13. Name for 5 membered ring






14. 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






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






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






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






18. 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






19. Enzyme that hydrolyzes lactose into galactose and glucose into






20. Interconversion btw two anomers






21. 2 reasons why fats have more efficient energy stores than carbs






22. Characteristics of hydrophobic amino acids






23. Unique feature of glycine






24. Enzymes that hydrolyze fats






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






26. Glycosidic linkage of lactose






27. Unique feature of cysteine






28. 3 carbon triol that forms backbone of triacylglycerol






29. Physiological pH






30. What stabilizes lipid bilayer?






31. 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)






32. 4 causes of denaturation of proteins






33. Acidic amino acids






34. Glycosidic linkage of maltose






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






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






37. Hydrophilic amino acids






38. Unique feature of proline






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






40. D and L describe what?






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






42. Name for 6 membered ring






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






44. Formula for urea






45. Characteristics of acidic amino acids






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






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






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






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






50. What kind of lipids compromise the lipid bilayer?