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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 sucrose






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






3. Polar amino acids






4. Basic amino acids






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






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






7. Glyceraldehyde






8. Sugar with an aldehyde at the first carbon position






9. 2 reasons why fats have more efficient energy stores than carbs






10. 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






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






12. Acetic acid formula?






13. Formula for urea






14. Hydrophilic amino acids






15. Energy storage molecule of carbohydrates for plants






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






17. Fatty acid structure






18. D and L describe what?






19. Glycosidic linkage of cellulose






20. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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






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






24. Naturally occurring carbohydrates are formed from what?






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






26. 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






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






28. 4 causes of denaturation of proteins






29. 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)






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






31. Energy storage molecule of carbohydrates for animals






32. What stabilizes lipid bilayer?






33. Name for 5 membered ring






34. Name for 6 membered ring






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






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






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






38. Histidine






39. Characteristic of basic amino acids






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






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






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






43. Molecules with the same atoms - but different bonds






44. Characteristics of acidic amino acids






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






46. Characteristics of polar amino acids






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






48. 3 carbon triol that forms backbone of triacylglycerol






49. 3 physiological roles of lipids






50. Enzyme that hydrolyzes lactose into galactose and glucose into