Test your basic knowledge |

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






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






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






4. Formula for urea






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






6. 3 physiological roles of lipids






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






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






9. Enzymes that hydrolyze fats






10. Glyceraldehyde






11. Characteristic of basic amino acids






12. Molecules with the same atoms - but different bonds






13. 4 causes of denaturation of proteins






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






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






16. What stabilizes lipid bilayer?






17. Fxn of cholesterol in the membrane?






18. Energy storage molecule of carbohydrates for plants






19. Physiological pH






20. Characteristics of acidic amino acids






21. Enzyme that hydrolyzes maltose into 2 glucose molecules?






22. Sugar with an aldehyde at the first carbon position






23. 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






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






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






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






27. Interconversion btw two anomers






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






29. 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






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






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






32. Unique feature of glycine






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






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






35. Name for 5 membered ring






36. Characteristics of polar amino acids






37. Glycosidic linkage of lactose






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






39. Polar amino acids






40. 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)






41. Glycosidic linkage of cellulose






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






43. Fatty acid structure






44. Naturally occurring carbohydrates are formed from what?






45. Enzyme that hydrolyzes lactose into galactose and glucose into






46. Glycosidic linkage of maltose






47. 2 reasons why fats have more efficient energy stores than carbs






48. Basic amino acids






49. Characteristics of hydrophobic amino acids






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