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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 cellulose






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






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






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






5. Fatty acid structure






6. Basic amino acids






7. Unique feature of cysteine






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






9. Glycosidic linkage of maltose






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






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






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






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






14. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






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






18. D and L describe what?






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






20. Polar amino acids






21. Glycosidic linkage of sucrose






22. Unique feature of proline






23. 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






24. Hydrolysis






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






26. Nonpolar - hydrophobic amino acids






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






28. Formula for urea






29. Characteristics of polar amino acids






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






31. What kind of lipids compromise the lipid bilayer?






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






33. Energy storage molecule of carbohydrates for plants






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






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






36. Sugar with an aldehyde at the first carbon position






37. Acidic amino acids






38. Fxn of cholesterol in the membrane?






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






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






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






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






43. Characteristics of hydrophobic amino acids






44. 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






45. Glycosidic linkage of lactose






46. Molecules with the same atoms - but different bonds






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






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






49. Characteristic of basic amino acids






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