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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. What configuration do all naturally occuring amino acids have?






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






3. Glycosidic linkage of cellulose






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






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






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






7. Name for 5 membered ring






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






9. Interconversion btw two anomers






10. Sulfur containing amino acids






11. Naturally occurring carbohydrates are formed from what?






12. Glycosidic linkage of lactose






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






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






15. Characteristics of acidic amino acids






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






17. D and L describe what?






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






19. Polar amino acids






20. Formula for urea






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






22. Macromolecule that performs a variety of bodily functions and is composed of up to 20 different 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. Name for 6 membered ring






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






26. What stabilizes lipid bilayer?






27. Glycosidic linkage of maltose






28. Energy storage molecule of carbohydrates for animals






29. Acetic acid formula?






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






31. Physiological pH






32. 3 physiological roles of lipids






33. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






36. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






37. Basic amino acids






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






39. Characteristics of hydrophobic amino acids






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






41. Energy storage molecule of carbohydrates for plants






42. Glycosidic linkage of sucrose






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






44. 2 covalent bonds formed in proteins






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






46. 2 reasons why fats have more efficient energy stores than carbs






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






48. Fxn of cholesterol in the membrane?






49. Enzyme that hydrolyzes maltose into 2 glucose molecules?






50. Nonpolar - hydrophobic amino acids