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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. Hydrolysis






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






3. Hydrophilic amino acids






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






5. Fxn of cholesterol in the membrane?






6. Name for 6 membered ring






7. Glycosidic linkage of maltose






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






9. Characteristics of hydrophobic amino acids






10. Glyceraldehyde






11. 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)






12. What kind of lipids compromise the lipid bilayer?






13. Polar amino acids






14. Basic amino acids






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






16. Naturally occurring carbohydrates are formed from what?






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






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






19. 3 carbon triol that forms backbone of triacylglycerol






20. Characteristics of polar amino acids






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






22. Enzymes that hydrolyze fats






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






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






25. Enzyme that hydrolyzes lactose into galactose and glucose into






26. Enzyme that hydrolyzes maltose into 2 glucose molecules?






27. 2 covalent bonds formed in proteins






28. Characteristics of acidic amino acids






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






30. 4 causes of denaturation of proteins






31. 2 reasons why fats have more efficient energy stores than carbs






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






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






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






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






36. 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






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






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






39. Sugar with an aldehyde at the first carbon position






40. 3 physiological roles of lipids






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






42. Glycosidic linkage of lactose






43. Molecules with the same atoms - but different bonds






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






46. Characteristic of basic amino acids






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






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






49. Formula for urea






50. Name for 5 membered ring