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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. Fatty acid structure






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






3. Basic amino acids






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






5. Glycosidic linkage of maltose






6. Glycosidic linkage of cellulose






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






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






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






10. Energy storage molecule of carbohydrates for animals






11. Acetic acid formula?






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






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






14. Enzyme that hydrolyzes maltose into 2 glucose molecules?






15. 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






16. Unique feature of cysteine






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






18. 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






19. Fxn of cholesterol in the membrane?






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






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






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






23. Glycosidic linkage of sucrose






24. Enzyme that hydrolyzes lactose into galactose and glucose into






25. 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)






26. Characteristics of hydrophobic amino acids






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






28. Hydrolysis






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






30. D and L describe what?






31. What stabilizes lipid bilayer?






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






33. Name for 6 membered ring






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






35. Physiological pH






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






37. Formula for urea






38. Molecules with the same atoms - but different bonds






39. Histidine






40. 2 covalent bonds formed in proteins






41. What kind of lipids compromise the lipid bilayer?






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






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






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






45. Acidic amino acids






46. Characteristics of acidic amino acids






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






48. Energy storage molecule of carbohydrates for plants






49. Characteristics of polar amino acids






50. Unique feature of glycine