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






2. Fatty acid structure






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






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






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






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






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






9. Sugar with an aldehyde at the first carbon position






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






11. 2 covalent bonds formed in proteins






12. Enzyme that hydrolyzes lactose into galactose and glucose into






13. Sulfur containing amino acids






14. Polar amino acids






15. Name for 5 membered ring






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






17. Glycosidic linkage of cellulose






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






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






20. Enzymes that hydrolyze fats






21. 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)






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






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






24. Hydrophilic amino acids






25. 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






26. 3 carbon triol that forms backbone of triacylglycerol






27. Characteristics of acidic amino acids






28. Histidine






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






30. PH at which positive and negative charges balance to form a zwitterion






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






32. Glycosidic linkage of sucrose






33. Energy storage molecule of carbohydrates for plants






34. Interconversion btw two anomers






35. Hydrolysis






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






37. 2 reasons why fats have more efficient energy stores than carbs






38. Unique feature of glycine






39. Name for 6 membered ring






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






41. Acidic amino acids






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






43. 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






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






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






46. Basic amino acids






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






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






49. Formula for urea






50. Glycosidic linkage of lactose