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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. (+) and (-) describe what?






2. Nonpolar - hydrophobic amino acids






3. Unique feature of glycine






4. Characteristics of hydrophobic amino acids






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






6. Glyceraldehyde






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






8. Fxn of cholesterol in the membrane?






9. Enzyme that hydrolyzes lactose into galactose and glucose into






10. 3 physiological roles of lipids






11. Physiological pH






12. Name for 6 membered ring






13. Glycosidic linkage of sucrose






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






15. Glycosidic linkage of lactose






16. Acidic amino acids






17. 2 covalent bonds formed in proteins






18. What kind of lipids compromise the lipid bilayer?






19. Naturally occurring carbohydrates are formed from what?






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






21. 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






22. Hydrophilic amino acids






23. 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)






24. Glycosidic linkage of cellulose






25. Unique feature of cysteine






26. Basic amino acids






27. Fatty acid structure






28. What stabilizes lipid bilayer?






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






30. Histidine






31. Characteristics of acidic amino acids






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






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






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






35. Molecules with the same atoms - but different bonds






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






37. Enzyme that hydrolyzes maltose into 2 glucose molecules?






38. Hydrolysis






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






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






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






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






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






44. Adjacent polypeptide strands running in the same direction in Beta pleated sheet structure






45. 3 carbon triol that forms backbone of triacylglycerol






46. Characteristic of basic amino acids






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






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






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






50. Formula for urea







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