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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. Glycosidic linkage of maltose






2. Polar amino acids






3. Energy storage molecule of carbohydrates for animals






4. Characteristics of acidic amino acids






5. 3 physiological roles of lipids






6. Unique feature of cysteine






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






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






9. Naturally occurring carbohydrates are formed from what?






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






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






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






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






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






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






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






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






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






19. Characteristics of hydrophobic amino acids






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






21. Unique feature of proline






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






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






24. Nonpolar - hydrophobic amino acids






25. 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)






26. 3 carbon triol that forms backbone of triacylglycerol






27. Energy storage molecule of carbohydrates for plants






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






29. Fatty acid structure






30. Hydrolysis






31. 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






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






33. Unique feature of glycine






34. 4 causes of denaturation of proteins






35. Histidine






36. What kind of lipids compromise the lipid bilayer?






37. Fxn of cholesterol in the membrane?






38. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






39. Hydrophilic amino acids






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






41. Acidic amino acids






42. Enzymes that hydrolyze fats






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






44. Sugar with an aldehyde at the first carbon position






45. Molecules with the same atoms - but different bonds






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






47. 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






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






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






50. Enzyme that hydrolyzes maltose into 2 glucose molecules?