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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. Enzymes that hydrolyze fats






2. 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






3. Enzyme that hydrolyzes lactose into galactose and glucose into






4. Sugar with an aldehyde at the first carbon position






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






6. D and L describe what?






7. Characteristics of acidic amino acids






8. Formula for urea






9. Glycosidic linkage of sucrose






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






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






12. Acidic amino acids






13. Glycosidic linkage of cellulose






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. Glycosidic linkage of maltose






16. Naturally occurring carbohydrates are formed from what?






17. Name for 5 membered ring






18. Name for 6 membered ring






19. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






20. Energy storage molecule of carbohydrates for animals






21. What stabilizes lipid bilayer?






22. Sulfur containing amino acids






23. 4 causes of denaturation of proteins






24. Physiological pH






25. Acetic acid formula?






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






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






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






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






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






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






32. Histidine






33. 2 covalent bonds formed in proteins






34. Characteristic of basic amino acids






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






36. 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






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






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






39. Interconversion btw two anomers






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






41. Enzyme that hydrolyzes maltose into 2 glucose molecules?






42. Unique feature of proline






43. Fxn of cholesterol in the membrane?






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






45. Hydrophilic amino acids






46. Characteristics of hydrophobic amino acids






47. 3 physiological roles of lipids






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






49. Molecules with the same atoms - but different bonds






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