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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. Characteristic of basic amino acids






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






3. Energy storage molecule of carbohydrates for plants






4. Glycosidic linkage of sucrose






5. Molecules with the same atoms - but different bonds






6. D and L describe what?






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






8. Characteristics of polar amino acids






9. Energy storage molecule of carbohydrates for animals






10. 4 causes of denaturation of proteins






11. Glycosidic linkage of cellulose






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






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






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






15. What kind of lipids compromise the lipid bilayer?






16. Unique feature of cysteine






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






18. What stabilizes lipid bilayer?






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






20. Enzyme that hydrolyzes lactose into galactose and glucose into






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






22. Unique feature of proline






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






24. Acidic amino acids






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






26. Histidine






27. Glycosidic linkage of lactose






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






29. Sugar with an aldehyde at the first carbon position






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






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






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






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






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






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






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. Fatty acid structure






38. 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)






39. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






40. Diastereomers that vary in the configuration of 1 chiral center






41. Fxn of cholesterol in the membrane?






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






43. Basic amino acids






44. 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






45. Enzymes that hydrolyze fats






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






47. Hydrolysis






48. Name for 5 membered ring






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






50. Interconversion btw two anomers