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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. Characteristic of basic amino acids






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






3. Polar amino acids






4. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






6. Nonpolar - hydrophobic amino acids






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






8. 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






9. Energy storage molecule of carbohydrates for plants






10. Fxn of cholesterol in the membrane?






11. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






12. 2 reasons why fats have more efficient energy stores than carbs






13. Name for 5 membered ring






14. Energy storage molecule of carbohydrates for animals






15. Glycosidic linkage of sucrose






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






17. Glycosidic linkage of cellulose






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






19. Fatty acid structure






20. Name for 6 membered ring






21. Unique feature of cysteine






22. 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






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






24. Unique feature of glycine






25. 4 causes of denaturation of proteins






26. Interconversion btw two anomers






27. 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






28. Unique feature of proline






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






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






31. 3 carbon triol that forms backbone of triacylglycerol






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






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






34. Acidic amino acids






35. Characteristics of hydrophobic amino acids






36. What kind of lipids compromise the lipid bilayer?






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






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






39. Hydrolysis






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






41. 3 physiological roles of lipids






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






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






44. Glyceraldehyde






45. Hydrophilic amino acids






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






47. Formula for urea






48. 2 covalent bonds formed in proteins






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






50. Sulfur containing amino acids