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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 configuration do all naturally occuring amino acids have?






2. Characteristics of acidic amino acids






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






4. Sugar with an aldehyde at the first carbon position






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






6. Energy storage molecule of carbohydrates for animals






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






8. D and L describe what?






9. 3 carbon triol that forms backbone of triacylglycerol






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






11. Glyceraldehyde






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






13. Unique feature of glycine






14. Polar amino acids






15. Glycosidic linkage of cellulose






16. 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)






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






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






19. Enzymes that hydrolyze fats






20. Sulfur containing amino acids






21. 2 reasons why fats have more efficient energy stores than carbs






22. Enzyme that hydrolyzes maltose into 2 glucose molecules?






23. 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






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






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






26. Formula for urea






27. Acetic acid formula?






28. Interconversion btw two anomers






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






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






31. Glycosidic linkage of sucrose






32. 4 causes of denaturation of proteins






33. Characteristics of hydrophobic amino acids






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






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






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






37. Characteristic of basic amino acids






38. What kind of lipids compromise the lipid bilayer?






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






40. Histidine






41. Molecules with the same atoms - but different bonds






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






43. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






44. Enzyme that hydrolyzes lactose into galactose and glucose into






45. Characteristics of polar amino acids






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






47. Physiological pH






48. Hydrophilic amino acids






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






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