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






2. Energy storage molecule of carbohydrates for plants






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






4. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






6. 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






7. Glycosidic linkage of lactose






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






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






10. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






11. Enzyme that hydrolyzes lactose into galactose and glucose into






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






13. Name for 6 membered ring






14. Physiological pH






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






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






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






18. Basic amino acids






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






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






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






22. Characteristic of basic amino acids






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






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






25. Glycosidic linkage of sucrose






26. Characteristics of hydrophobic amino acids






27. Acetic acid formula?






28. Fatty acid structure






29. Unique feature of glycine






30. 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






31. 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






32. Name for 5 membered ring






33. Hydrophilic amino acids






34. 3 carbon triol that forms backbone of triacylglycerol






35. Nonpolar - hydrophobic amino acids






36. Energy storage molecule of carbohydrates for animals






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






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






39. 4 causes of denaturation of proteins






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






41. Naturally occurring carbohydrates are formed from what?






42. Glyceraldehyde






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






44. 3 physiological roles of lipids






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






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






47. Glycosidic linkage of maltose






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






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






50. 2 reasons why fats have more efficient energy stores than carbs