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






2. Characteristic of basic amino acids






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






4. Interconversion btw two anomers






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






6. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






8. Acidic amino acids






9. Formula for urea






10. Basic amino acids






11. 2 reasons why fats have more efficient energy stores than carbs






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






13. 2 covalent bonds formed in proteins






14. 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






15. Fxn of cholesterol in the membrane?






16. Glyceraldehyde






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






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






19. D and L describe what?






20. Physiological pH






21. Fatty acid structure






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






23. Unique feature of glycine






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






25. 4 causes of denaturation of proteins






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






27. Energy storage molecule of carbohydrates for plants






28. Glycosidic linkage of cellulose






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






30. Naturally occurring carbohydrates are formed from what?






31. Glycosidic linkage of maltose






32. Hydrophilic amino acids






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






34. 3 physiological roles of lipids






35. Name for 6 membered ring






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






37. Energy storage molecule of carbohydrates for animals






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






39. Unique feature of cysteine






40. Characteristics of acidic amino acids






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






42. Polar amino acids






43. Enzyme that hydrolyzes lactose into galactose and glucose into






44. Unique feature of proline






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






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






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






48. Separation is due to charge - with negative charge moving toward positive electrode and positive charge moving toward negative electrode






49. What stabilizes lipid bilayer?






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