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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. Interconversion btw two anomers






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






3. Unique feature of proline






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






5. Polar amino acids






6. Hydrophilic amino acids






7. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






8. Formula for urea






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






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






11. Name for 6 membered ring






12. 2 covalent bonds formed in proteins






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






14. Histidine






15. Unique feature of cysteine






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






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






18. Characteristics of hydrophobic amino acids






19. Glycosidic linkage of sucrose






20. Basic amino acids






21. 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






22. Energy storage molecule of carbohydrates for plants






23. D and L describe what?






24. 3 physiological roles of lipids






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






26. Glycosidic linkage of lactose






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






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






29. Molecules with the same atoms - but different bonds






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






31. Glyceraldehyde






32. Name for 5 membered ring






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






34. Fxn of cholesterol in the membrane?






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






36. 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)






37. 2 reasons why fats have more efficient energy stores than carbs






38. Characteristics of acidic amino acids






39. What stabilizes lipid bilayer?






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






41. Fatty acid structure






42. Naturally occurring carbohydrates are formed from what?






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






44. Characteristic of basic amino acids






45. Sugar with an aldehyde at the first carbon position






46. Glycosidic linkage of cellulose






47. 3 carbon triol that forms backbone of triacylglycerol






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






49. Enzymes that hydrolyze fats






50. Unique feature of glycine