Test your basic knowledge |

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. Fxn of cholesterol in the membrane?






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






3. 3 carbon triol that forms backbone of triacylglycerol






4. Name for 5 membered ring






5. Characteristic of basic amino acids






6. D and L describe what?






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






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






9. Sulfur containing amino acids






10. 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)






11. 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






12. Unique feature of glycine






13. 2 covalent bonds formed in proteins






14. Characteristics of polar amino acids






15. Unique feature of cysteine






16. What stabilizes lipid bilayer?






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






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






19. Glycosidic linkage of cellulose






20. Glycosidic linkage of sucrose






21. Fatty acid structure






22. Characteristics of acidic amino acids






23. Acidic amino acids






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






25. Enzyme that hydrolyzes lactose into galactose and glucose into






26. Energy storage molecule of carbohydrates for animals






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






28. Acetic acid formula?






29. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






31. 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






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






33. 3 physiological roles of lipids






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






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






36. 4 causes of denaturation of proteins






37. Characteristics of hydrophobic amino acids






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






39. Unique feature of proline






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






41. Histidine






42. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






43. Polar amino acids






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






45. Nonpolar - hydrophobic amino acids






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






47. Basic amino acids






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






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






50. 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