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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 kind of lipids compromise the lipid bilayer?






2. Sulfur containing amino acids






3. Glycosidic linkage of lactose






4. 3 physiological roles of lipids






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






6. Characteristics of hydrophobic amino acids






7. Histidine






8. Glycosidic linkage of cellulose






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






10. 2 reasons why fats have more efficient energy stores than carbs






11. Enzyme that hydrolyzes maltose into 2 glucose molecules?






12. Name for 6 membered ring






13. Unique feature of proline






14. 4 causes of denaturation of proteins






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. Diastereomers that vary in the configuration of 1 chiral center






17. Unique feature of glycine






18. Fatty acid structure






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






20. Hydrophilic amino acids






21. 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






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






23. Sugar with an aldehyde at the first carbon position






24. Physiological pH






25. Acetic acid formula?






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






27. Hydrolysis






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






29. 3 carbon triol that forms backbone of triacylglycerol






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






31. Nonpolar - hydrophobic amino acids






32. 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)






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






34. Formula for urea






35. Molecules with the same atoms - but different bonds






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






37. Glycosidic linkage of maltose






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






39. Basic amino acids






40. Unique feature of cysteine






41. Enzymes that hydrolyze fats






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






43. Characteristic of basic amino acids






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






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






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






47. Naturally occurring carbohydrates are formed from what?






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






49. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






50. Name for 5 membered ring