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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. What stabilizes lipid bilayer?






2. Formula for urea






3. Glycosidic linkage of cellulose






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






5. Characteristics of acidic amino acids






6. Sugar with an aldehyde at the first carbon position






7. Unique feature of proline






8. Energy storage molecule of carbohydrates for animals






9. 2 covalent bonds formed in proteins






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






11. Interconversion btw two anomers






12. Name for 5 membered ring






13. Basic amino acids






14. Enzyme that hydrolyzes lactose into galactose and glucose into






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






16. 3 carbon triol that forms backbone of triacylglycerol






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






18. 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






19. Physiological pH






20. Naturally occurring carbohydrates are formed from what?






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






22. 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






23. Fxn of cholesterol in the membrane?






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






25. D and L describe what?






26. Energy storage molecule of carbohydrates for plants






27. Glyceraldehyde






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






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






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






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






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






33. Sulfur containing amino acids






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






35. Enzyme that hydrolyzes maltose into 2 glucose molecules?






36. Enzymes that hydrolyze fats






37. Fatty acid structure






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






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






40. Characteristics of polar amino acids






41. Acetic acid formula?






42. Nonpolar - hydrophobic amino acids






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






44. Unique feature of glycine






45. Hydrolysis






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






47. Glycosidic linkage of sucrose






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






49. 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)






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