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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. Characteristics of hydrophobic amino acids






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






3. Energy storage molecule of carbohydrates for animals






4. Name for 6 membered ring






5. 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)






6. Polar amino acids






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






8. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






9. What stabilizes lipid bilayer?






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






11. Acetic acid formula?






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






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






14. Characteristics of polar amino acids






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






16. Glycosidic linkage of cellulose






17. Unique feature of cysteine






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






19. 3 carbon triol that forms backbone of triacylglycerol






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






21. Glyceraldehyde






22. 3 physiological roles of lipids






23. Acidic amino acids






24. Fatty acid structure






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






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






27. Glycosidic linkage of maltose






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






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






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






31. Glycosidic linkage of sucrose






32. Histidine






33. Naturally occurring carbohydrates are formed from what?






34. 2 reasons why fats have more efficient energy stores than carbs






35. Enzymes that hydrolyze fats






36. Hydrolysis






37. 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






38. Covalent bond formed btw carboxyl group of one atom and the amino group of another amino acid in an addition - elimination mechanism - enzymes are required to carry out rxn






39. Hydrophilic amino acids






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






41. D and L describe what?






42. Unique feature of proline






43. Glycosidic linkage of lactose






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






45. Sulfur containing amino acids






46. Nonpolar - hydrophobic amino acids






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






48. Energy storage molecule of carbohydrates for plants






49. Physiological pH






50. Characteristic of basic amino acids