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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. Characteristics of acidic amino acids






2. 4 causes of denaturation of proteins






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






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






5. 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






6. Characteristics of polar amino acids






7. Nonpolar - hydrophobic amino acids






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






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






10. 3 carbon triol that forms backbone of triacylglycerol






11. Fxn of cholesterol in the membrane?






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






13. Energy storage molecule of carbohydrates for animals






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






15. Unique feature of cysteine






16. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






19. Molecules with the same atoms - but different bonds






20. Name for 5 membered ring






21. Histidine






22. What stabilizes lipid bilayer?






23. Enzymes that hydrolyze fats






24. Glycosidic linkage of cellulose






25. Sugar with an aldehyde at the first carbon position






26. Formula for urea






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






28. 2 reasons why fats have more efficient energy stores than carbs






29. Glycosidic linkage of lactose






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






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






32. Unique feature of proline






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. Characteristic of basic amino acids






35. Unique feature of glycine






36. Acidic amino acids






37. Physiological pH






38. Glycosidic linkage of sucrose






39. What kind of lipids compromise the lipid bilayer?






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






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






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






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






44. 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






45. Sulfur containing amino acids






46. Glycosidic linkage of maltose






47. Acetic acid formula?






48. D and L describe what?






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






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