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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. Enzyme that hydrolyzes lactose into galactose and glucose into






2. Characteristics of polar amino acids






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






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






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






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






7. Fxn of cholesterol in the membrane?






8. Unique feature of proline






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






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






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






12. 2 covalent bonds formed in proteins






13. 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






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






15. Hydrophilic amino acids






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






17. What stabilizes lipid bilayer?






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






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






20. 2 reasons why fats have more efficient energy stores than carbs






21. Polar amino acids






22. Glycosidic linkage of cellulose






23. Name for 6 membered ring






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






25. Glycosidic linkage of maltose






26. Interconversion btw two anomers






27. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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






30. Histidine






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






32. Glyceraldehyde






33. Energy storage molecule of carbohydrates for plants






34. Glycosidic linkage of lactose






35. 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)






36. Characteristics of hydrophobic amino acids






37. Formula for urea






38. Enzyme that hydrolyzes maltose into 2 glucose molecules?






39. Energy storage molecule of carbohydrates for animals






40. Characteristic of basic amino acids






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






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






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






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






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






46. Enzymes that hydrolyze fats






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






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






49. Glycosidic linkage of sucrose






50. Hydrolysis