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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. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






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






5. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






6. Physiological pH






7. Characteristics of polar amino acids






8. Unique feature of cysteine






9. 3 physiological roles of lipids






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






11. Fxn of cholesterol in the membrane?






12. Hydrolysis






13. Energy storage molecule of carbohydrates for plants






14. Unique feature of glycine






15. Enzymes that hydrolyze fats






16. Hydrophilic amino acids






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






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






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






20. Polar amino acids






21. 4 causes of denaturation of proteins






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






23. Acidic amino acids






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






25. What stabilizes lipid bilayer?






26. Glycosidic linkage of maltose






27. Histidine






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






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






30. 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)






31. Nonpolar - hydrophobic amino acids






32. Formula for urea






33. Interconversion btw two anomers






34. 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






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






36. Glycosidic linkage of sucrose






37. Characteristic of basic amino acids






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






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






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






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






42. Glycosidic linkage of lactose






43. Naturally occurring carbohydrates are formed from what?






44. Energy storage molecule of carbohydrates for animals






45. 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






46. Glyceraldehyde






47. Enzyme that hydrolyzes lactose into galactose and glucose into






48. D and L describe what?






49. 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






50. Fatty acid structure