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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 kind of lipids compromise the lipid bilayer?






2. Glycosidic linkage of lactose






3. Acetic acid formula?






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






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






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






7. Unique feature of proline






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






9. Enzymes that hydrolyze fats






10. Fatty acid structure






11. Basic amino acids






12. Hydrophilic amino acids






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






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






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. Sulfur containing amino acids






17. Acidic amino acids






18. Energy storage molecule of carbohydrates for animals






19. Energy storage molecule of carbohydrates for plants






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






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






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






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






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






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






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






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






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






29. 3 carbon triol that forms backbone of triacylglycerol






30. 4 causes of denaturation of proteins






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






32. Enzyme that hydrolyzes maltose into 2 glucose molecules?






33. Enzyme that hydrolyzes lactose into galactose and glucose into






34. D and L describe what?






35. Naturally occurring carbohydrates are formed from what?






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






37. Molecules with the same atoms - but different bonds






38. Characteristics of hydrophobic amino acids






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






40. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






42. Sugar with an aldehyde at the first carbon position






43. Fxn of cholesterol in the membrane?






44. Unique feature of cysteine






45. Interconversion btw two anomers






46. Characteristics of acidic amino acids






47. Glyceraldehyde






48. Histidine






49. 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)






50. Formula for urea