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






2. Enzymes that hydrolyze fats






3. Unique feature of proline






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






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






6. 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






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






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






9. Acetic acid formula?






10. Sugar with an aldehyde at the first carbon position






11. Characteristics of polar amino acids






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






13. 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






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






15. D and L describe what?






16. Characteristics of acidic amino acids






17. Unique feature of glycine






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






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






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






21. 3 physiological roles of lipids






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






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






24. 2 reasons why fats have more efficient energy stores than carbs






25. Basic amino acids






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






27. 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)






28. Glyceraldehyde






29. Glycosidic linkage of maltose






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






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






32. Unique feature of cysteine






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






34. Fatty acid structure






35. Nonpolar - hydrophobic amino acids






36. 3 carbon triol that forms backbone of triacylglycerol






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






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






39. Polar amino acids






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






41. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






42. Enzyme that hydrolyzes maltose into 2 glucose molecules?






43. Energy storage molecule of carbohydrates for plants






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






45. What stabilizes lipid bilayer?






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






47. What kind of lipids compromise the lipid bilayer?






48. Glycosidic linkage of sucrose






49. 2 covalent bonds formed in proteins






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