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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. Enzyme that hydrolyzes lactose into galactose and glucose into






3. Characteristics of polar amino acids






4. Energy storage molecule of carbohydrates for plants






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






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






7. Acidic amino acids






8. What stabilizes lipid bilayer?






9. Hydrolysis






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






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






12. Acetic acid formula?






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






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






15. Name for 5 membered ring






16. 3 carbon triol that forms backbone of triacylglycerol






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






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






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






20. Histidine






21. Glycosidic linkage of cellulose






22. Glyceraldehyde






23. Sulfur containing amino acids






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






25. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






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






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






30. Hydrophilic amino acids






31. What kind of lipids compromise the lipid bilayer?






32. Polar amino acids






33. Energy storage molecule of carbohydrates for animals






34. Characteristics of acidic amino acids






35. Molecules with the same atoms - but different bonds






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






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






38. 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






39. Nonpolar - hydrophobic amino acids






40. Fxn of cholesterol in the membrane?






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






42. 2 reasons why fats have more efficient energy stores than carbs






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






44. 4 causes of denaturation of proteins






45. Unique feature of glycine






46. 3 physiological roles of lipids






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






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






49. D and L describe what?






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