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






2. Unique feature of proline






3. Interconversion btw two anomers






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






5. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






8. 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






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






10. 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)






11. Glycosidic linkage of sucrose






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






13. Enzyme that hydrolyzes maltose into 2 glucose molecules?






14. Glycosidic linkage of lactose






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






16. 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






17. Energy storage molecule of carbohydrates for animals






18. Unique feature of cysteine






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






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






21. What kind of lipids compromise the lipid bilayer?






22. Fatty acid structure






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






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






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






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






27. 3 carbon triol that forms backbone of triacylglycerol






28. Sulfur containing amino acids






29. D and L describe what?






30. Basic amino acids






31. Histidine






32. 4 causes of denaturation of proteins






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






34. Acidic amino acids






35. Glycosidic linkage of maltose






36. Characteristics of hydrophobic amino acids






37. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






39. Fxn of cholesterol in the membrane?






40. Nonpolar - hydrophobic amino acids






41. What stabilizes lipid bilayer?






42. Naturally occurring carbohydrates are formed from what?






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






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






46. Glycosidic linkage of cellulose






47. Characteristics of polar amino acids






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






49. Unique feature of glycine






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