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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. Glyceraldehyde






2. What kind of lipids compromise the lipid bilayer?






3. Acidic amino acids






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






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






6. Name for 5 membered ring






7. 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






8. Enzymes that hydrolyze fats






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






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






11. Fatty acid structure






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






13. 2 reasons why fats have more efficient energy stores than carbs






14. 3 physiological roles of lipids






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






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






17. Characteristics of acidic amino acids






18. Fxn of cholesterol in the membrane?






19. Sugar with an aldehyde at the first carbon position






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






21. 3 carbon triol that forms backbone of triacylglycerol






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






23. Polar amino acids






24. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






26. Sulfur containing amino acids






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






28. Energy storage molecule of carbohydrates for plants






29. Unique feature of cysteine






30. Physiological pH






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






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






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






34. 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






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






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






37. Histidine






38. Nonpolar - hydrophobic amino acids






39. Hydrolysis






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






41. Molecules with the same atoms - but different bonds






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






43. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






45. 2 covalent bonds formed in proteins






46. Enzyme that hydrolyzes lactose into galactose and glucose into






47. Interconversion btw two anomers






48. D and L describe what?






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






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