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






2. Energy storage molecule of carbohydrates for plants






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






4. Sulfur containing amino acids






5. Interconversion btw two anomers






6. Glycosidic linkage of sucrose






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






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






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






10. Acetic acid formula?






11. Acidic amino acids






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






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






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






15. 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






16. Name for 5 membered ring






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






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






19. 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






20. Characteristics of polar amino acids






21. Glycosidic linkage of maltose






22. Characteristics of hydrophobic amino acids






23. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






24. Enzymes that hydrolyze fats






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






26. Physiological pH






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






28. Energy storage molecule of carbohydrates for animals






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






30. D and L describe what?






31. Glyceraldehyde






32. Unique feature of proline






33. Basic amino acids






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






35. Hydrolysis






36. Naturally occurring carbohydrates are formed from what?






37. Glycosidic linkage of lactose






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






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






40. Unique feature of cysteine






41. 3 physiological roles of lipids






42. 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






43. What kind of lipids compromise the lipid bilayer?






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






45. Characteristics of acidic amino acids






46. Molecules with the same atoms - but different bonds






47. 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)






48. Glycosidic linkage of cellulose






49. Characteristic of basic amino acids






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