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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. Nonpolar - hydrophobic amino acids






2. Enzymes that hydrolyze fats






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






4. Fatty acid structure






5. Characteristic of basic amino acids






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






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






8. 2 reasons why fats have more efficient energy stores than carbs






9. Glycosidic linkage of cellulose






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






11. Energy storage molecule of carbohydrates for animals






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






13. Glycosidic linkage of maltose






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






15. Name for 5 membered ring






16. Interconversion btw two anomers






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






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






19. Acidic amino acids






20. Name for 6 membered ring






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






22. Hydrophilic amino acids






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






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






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






26. Histidine






27. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






28. 4 causes of denaturation of proteins






29. Energy storage molecule of carbohydrates for plants






30. Characteristics of hydrophobic amino acids






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. Hydrolysis






33. 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






34. Physiological pH






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






36. Formula for urea






37. Sugar with an aldehyde at the first carbon position






38. Acetic acid formula?






39. 2 covalent bonds formed in proteins






40. D and L describe what?






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






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






43. What stabilizes lipid bilayer?






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






45. Characteristics of acidic amino acids






46. 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






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






48. Glycosidic linkage of lactose






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






50. Glycosidic linkage of sucrose