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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. Histidine






2. Unique feature of glycine






3. What kind of lipids compromise the lipid bilayer?






4. Glyceraldehyde






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






6. 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






7. Fatty acid structure






8. Physiological pH






9. Sulfur containing amino acids






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






11. Characteristic of basic amino acids






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






13. Molecules with the same atoms - but different bonds






14. 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)






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






16. D and L describe what?






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






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






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






20. Acetic acid formula?






21. Energy storage molecule of carbohydrates for animals






22. Glycosidic linkage of cellulose






23. Energy storage molecule of carbohydrates for plants






24. Name for 5 membered ring






25. 2 reasons why fats have more efficient energy stores than carbs






26. Naturally occurring carbohydrates are formed from what?






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






28. Glycosidic linkage of maltose






29. Hydrophilic amino acids






30. Initial folding of proteins into shapes stabilized by H bonds btw amino and carboxyl groups of backbone






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






32. Unique feature of cysteine






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






34. Characteristics of acidic amino acids






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






36. Formula for urea






37. Basic amino acids






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






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






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






41. 2 covalent bonds formed in proteins






42. Name for 6 membered ring






43. Hydrolysis






44. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






46. 3 physiological roles of lipids






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






48. Glycosidic linkage of sucrose






49. Characteristics of hydrophobic amino acids






50. Interconversion btw two anomers