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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. Sugar with an aldehyde at the first carbon position






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






3. Glyceraldehyde






4. 3 physiological roles of lipids






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






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






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






8. 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






9. What stabilizes lipid bilayer?






10. Polar amino acids






11. 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






12. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






14. Unique feature of glycine






15. Glycosidic linkage of lactose






16. Energy storage molecule of carbohydrates for animals






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






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






19. Name for 5 membered ring






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






21. Formula for urea






22. Histidine






23. Characteristics of hydrophobic amino acids






24. What kind of lipids compromise the lipid bilayer?






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






26. 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)






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






28. Physiological pH






29. Hydrophilic amino acids






30. Glycosidic linkage of sucrose






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






32. Enzymes that hydrolyze fats






33. Hydrolysis






34. Acetic acid formula?






35. Interconversion btw two anomers






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






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






38. Enzyme that hydrolyzes lactose into galactose and glucose into






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






40. What describes the affinity of functional groups for a proton?






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






42. 2 reasons why fats have more efficient energy stores than carbs






43. Unique feature of proline






44. Name for 6 membered ring






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






46. Unique feature of cysteine






47. 2 covalent bonds formed in proteins






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






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






50. Nonpolar - hydrophobic amino acids