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MCAT Organic Chemistry 2

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Hydrophilic amino acids






2. What stabilizes lipid bilayer?






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






4. 2 covalent bonds formed in proteins






5. 3 carbon triol that forms backbone of triacylglycerol






6. Unique feature of proline






7. Glycosidic linkage of maltose






8. Sugar with an aldehyde at the first carbon position






9. Acidic amino acids






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






11. Nonpolar - hydrophobic amino acids






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






13. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






15. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






17. Physiological pH






18. Hydrolysis






19. Glycosidic linkage of lactose






20. Acetic acid formula?






21. Characteristics of hydrophobic amino acids






22. Glyceraldehyde






23. Energy storage molecule of carbohydrates for animals






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






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






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






27. Polar amino acids






28. What kind of lipids compromise the lipid bilayer?






29. Characteristics of polar amino acids






30. D and L describe what?






31. 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






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






33. Energy storage molecule of carbohydrates for plants






34. Molecules with the same atoms - but different bonds






35. Interconversion btw two anomers






36. Formula for urea






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






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






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






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






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






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






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






44. Characteristic of basic amino acids






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






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






47. Unique feature of cysteine






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






49. 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






50. Name for 6 membered ring







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