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






2. Glycosidic linkage of lactose






3. Interconversion btw two anomers






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






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






6. Fatty acid structure






7. Hydrolysis






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






9. Name for 6 membered ring






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






11. Unique feature of glycine






12. Enzyme that hydrolyzes lactose into galactose and glucose into






13. Characteristics of acidic amino acids






14. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






15. Acidic amino acids






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






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






18. Hydrophilic amino acids






19. Unique feature of cysteine






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






21. What configuration do all naturally occuring amino acids have?






22. Basic amino acids






23. Enzymes that hydrolyze fats






24. Glycosidic linkage of cellulose






25. 3 physiological roles of lipids






26. Unique feature of proline






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






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






29. Histidine






30. What stabilizes lipid bilayer?






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






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






33. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






35. Glycosidic linkage of sucrose






36. D and L describe what?






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






38. 2 reasons why fats have more efficient energy stores than carbs






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






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






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






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






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






44. 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






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






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






47. Fxn of cholesterol in the membrane?






48. Polar amino acids






49. Naturally occurring carbohydrates are formed from what?






50. Characteristics of hydrophobic amino acids