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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. 4 causes of denaturation of proteins






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






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






4. 2 covalent bonds formed in proteins






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. Fxn of cholesterol in the membrane?






7. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






8. Hydrolysis






9. Histidine






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






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






12. Glycosidic linkage of maltose






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






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






15. Molecules with the same atoms - but different bonds






16. Acetic acid formula?






17. 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






18. 3 carbon triol that forms backbone of triacylglycerol






19. Glycosidic linkage of sucrose






20. Sugar with an aldehyde at the first carbon position






21. Physiological pH






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






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






24. Polar amino acids






25. Characteristic of basic amino acids






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






27. Glyceraldehyde






28. What kind of lipids compromise the lipid bilayer?






29. Fatty acid structure






30. Naturally occurring carbohydrates are formed from what?






31. Sulfur containing amino acids






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






33. Name for 6 membered ring






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






35. Characteristics of acidic amino acids






36. Characteristics of polar amino acids






37. Unique feature of glycine






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






39. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






41. Basic amino acids






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






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






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






45. Acidic amino acids






46. Enzyme that hydrolyzes lactose into galactose and glucose into






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






48. Glycosidic linkage of cellulose






49. Energy storage molecule of carbohydrates for plants






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