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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. Basic amino acids






2. Naturally occurring carbohydrates are formed from what?






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






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






5. Glyceraldehyde






6. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






8. Hydrophilic amino acids






9. Acetic acid formula?






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






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






12. 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)






13. Characteristics of acidic amino acids






14. 2 covalent bonds formed in proteins






15. Histidine






16. Glycosidic linkage of sucrose






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






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






19. 2 reasons why fats have more efficient energy stores than carbs






20. Name for 5 membered ring






21. Unique feature of glycine






22. Characteristics of hydrophobic amino acids






23. Glycosidic linkage of lactose






24. Name for 6 membered ring






25. Sugar with an aldehyde at the first carbon position






26. 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






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






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






29. Enzyme that hydrolyzes lactose into galactose and glucose into






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






31. 4 causes of denaturation of proteins






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






33. Enzymes that hydrolyze fats






34. What kind of lipids compromise the lipid bilayer?






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






36. Energy storage molecule of carbohydrates for animals






37. Amino group placed on the right of a fischer projection is a?






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






39. Glycosidic linkage of cellulose






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






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






42. 3 carbon triol that forms backbone of triacylglycerol






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






44. Sulfur containing amino acids






45. Unique feature of proline






46. D and L describe what?






47. 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






48. Characteristics of polar amino acids






49. 3 physiological roles of lipids






50. 2 things that accelerate the rate of hydrolysis for peptide cleavage?