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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. Glyceraldehyde






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






3. Unique feature of cysteine






4. D and L describe what?






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






6. Nonpolar - hydrophobic amino acids






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






8. Characteristics of hydrophobic amino acids






9. Sulfur containing amino acids






10. Glycosidic linkage of cellulose






11. Acetic acid formula?






12. Hydrophilic amino acids






13. 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)






14. Enzyme that hydrolyzes lactose into galactose and glucose into






15. 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






16. 4 causes of denaturation of proteins






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






18. Energy storage molecule of carbohydrates for animals






19. Name for 5 membered ring






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






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






22. Polar amino acids






23. Glycosidic linkage of lactose






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






25. Unique feature of glycine






26. Sugar with an aldehyde at the first carbon position






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






28. Fatty acid structure






29. Physiological pH






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






31. Glycosidic linkage of maltose






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






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






34. Acidic amino acids






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






36. 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






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






38. What stabilizes lipid bilayer?






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






40. 2 reasons why fats have more efficient energy stores than carbs






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






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






43. Basic amino acids






44. Hydrolysis






45. Histidine






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






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






48. Formula for urea






49. What kind of lipids compromise the lipid bilayer?






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