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






2. Fxn of cholesterol in the membrane?






3. Naturally occurring carbohydrates are formed from what?






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






5. Name for 5 membered ring






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






7. Basic amino acids






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






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






10. Name for 6 membered ring






11. Glycosidic linkage of lactose






12. 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






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






14. What stabilizes lipid bilayer?






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






16. Formula for urea






17. 3 carbon triol that forms backbone of triacylglycerol






18. Characteristics of polar amino acids






19. 2 covalent bonds formed in proteins






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






21. Nonpolar - hydrophobic amino acids






22. Sulfur containing amino acids






23. Sugar with an aldehyde at the first carbon position






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






25. D and L describe what?






26. Fatty acid structure






27. Energy storage molecule of carbohydrates for animals






28. Molecules with the same atoms - but different bonds






29. 4 causes of denaturation of proteins






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






31. 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






32. Unique feature of glycine






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






34. Physiological pH






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






36. 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






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






38. Enzymes that hydrolyze fats






39. Acetic acid formula?






40. Hydrolysis






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






42. Glycosidic linkage of cellulose






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






44. Characteristics of acidic amino acids






45. Unique feature of cysteine






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






47. Histidine






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






49. Polar amino acids






50. Enzyme that hydrolyzes lactose into galactose and glucose into