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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. Glycosidic linkage of sucrose






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






3. Acetic acid formula?






4. Enzyme that hydrolyzes lactose into galactose and glucose into






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






6. 3 carbon triol that forms backbone of triacylglycerol






7. Hydrophilic amino acids






8. Basic amino acids






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






10. Histidine






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






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






13. What kind of lipids compromise the lipid bilayer?






14. Energy storage molecule of carbohydrates for plants






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






16. 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)






17. 2 reasons why fats have more efficient energy stores than carbs






18. Fxn of cholesterol in the membrane?






19. Glycosidic linkage of cellulose






20. Nonpolar - hydrophobic amino acids






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






22. Unique feature of glycine






23. Acidic amino acids






24. 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






25. Sugar with an aldehyde at the first carbon position






26. Physiological pH






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






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






29. Unique feature of proline






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






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






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






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






34. Molecules with the same atoms - but different bonds






35. Formula for urea






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






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






38. Glycosidic linkage of maltose






39. Interconversion btw two anomers






40. Name for 6 membered ring






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






42. Enzyme that hydrolyzes maltose into 2 glucose molecules?






43. Characteristics of polar amino acids






44. What stabilizes lipid bilayer?






45. D and L describe what?






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






47. Hydrolysis






48. Glyceraldehyde






49. Polar amino acids






50. 4 causes of denaturation of proteins