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






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






3. Glycosidic linkage of lactose






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






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






6. Physiological pH






7. Unique feature of glycine






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






9. 3 physiological roles of lipids






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






11. 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






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






13. Polar amino acids






14. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






16. 2 reasons why fats have more efficient energy stores than carbs






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






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






19. Glycosidic linkage of sucrose






20. Fxn of cholesterol in the membrane?






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






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






23. Energy storage molecule of carbohydrates for animals






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






25. Naturally occurring carbohydrates are formed from what?






26. Hydrolysis






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






28. Glycosidic linkage of cellulose






29. Hydrophilic amino acids






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






31. 2 covalent bonds formed in proteins






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






33. 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






34. Energy storage molecule of carbohydrates for plants






35. Characteristics of hydrophobic amino acids






36. Sulfur containing amino acids






37. Acetic acid formula?






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






39. Interconversion btw two anomers






40. D and L describe what?






41. Unique feature of proline






42. 4 causes of denaturation of proteins






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






44. Glycosidic linkage of maltose






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






46. Enzyme that hydrolyzes lactose into galactose and glucose into






47. What kind of lipids compromise the lipid bilayer?






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






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






50. Characteristic of basic amino acids