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






2. Nonpolar - hydrophobic amino acids






3. Characteristics of polar amino acids






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






5. Acidic amino acids






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






7. Name for 6 membered ring






8. Sugar with an aldehyde at the first carbon position






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






10. Enzyme that hydrolyzes lactose into galactose and glucose into






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






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






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






14. Glycosidic linkage of maltose






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






16. 3 carbon triol that forms backbone of triacylglycerol






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






18. Molecules with the same atoms - but different bonds






19. 2 covalent bonds formed in proteins






20. Physiological pH






21. 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






22. Fatty acid structure






23. 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






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






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






26. 4 causes of denaturation of proteins






27. Characteristics of acidic amino acids






28. Interconversion btw two anomers






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






30. What kind of lipids compromise the lipid bilayer?






31. Sulfur containing amino acids






32. Basic amino acids






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






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






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






36. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






37. D and L describe what?






38. Name for 5 membered ring






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






40. 2 reasons why fats have more efficient energy stores than carbs






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






42. Generated btw either thiols on different proteins or thiols on the same protein






43. Histidine






44. Naturally occurring carbohydrates are formed from what?






45. 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






46. Unique feature of cysteine






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






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






49. Glyceraldehyde






50. Characteristics of hydrophobic amino acids