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






2. D and L describe what?






3. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






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






7. Fxn of cholesterol in the membrane?






8. Hydrophilic amino acids






9. Sugar with an aldehyde at the first carbon position






10. Unique feature of proline






11. Formula for urea






12. 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






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






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






17. Energy storage molecule of carbohydrates for animals






18. Glycosidic linkage of sucrose






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






20. Energy storage molecule of carbohydrates for plants






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






22. Glycosidic linkage of cellulose






23. Acetic acid formula?






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






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






26. 2 covalent bonds formed in proteins






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






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






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






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






31. Unique feature of cysteine






32. What stabilizes lipid bilayer?






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






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






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






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






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






38. 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






39. Naturally occurring carbohydrates are formed from what?






40. Characteristic of basic amino acids






41. Characteristics of hydrophobic amino acids






42. 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)






43. Polar amino acids






44. Enzyme that hydrolyzes maltose into 2 glucose molecules?






45. Unique feature of glycine






46. Hydrolysis






47. Sulfur containing amino acids






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






49. Characteristics of acidic amino acids






50. Name for 6 membered ring