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






2. Unique feature of cysteine






3. Acetic acid formula?






4. Sugar with an aldehyde at the first carbon position






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






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






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






8. 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






9. Characteristics of acidic amino acids






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






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






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






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






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






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






16. D and L describe what?






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






18. Energy storage molecule of carbohydrates for animals






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






20. Physiological pH






21. Glycosidic linkage of cellulose






22. Characteristic of basic amino acids






23. 2 covalent bonds formed in proteins






24. Polar amino acids






25. What stabilizes lipid bilayer?






26. Characteristics of hydrophobic amino acids






27. Acidic amino acids






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






29. Energy storage molecule of carbohydrates for plants






30. Characteristics of polar amino acids






31. Fxn of cholesterol in the membrane?






32. What kind of lipids compromise the lipid bilayer?






33. Name for 6 membered ring






34. Formula for urea






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






36. 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)






37. Hydrophilic amino acids






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






39. Naturally occurring carbohydrates are formed from what?






40. Name for 5 membered ring






41. 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






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






43. Hydrolysis






44. 3 physiological roles of lipids






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






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






47. 2 reasons why fats have more efficient energy stores than carbs






48. Glyceraldehyde






49. Unique feature of glycine






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