Biochemistry Revision

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  • Created by: ImFord
  • Created on: 05-04-23 15:12

1. What characteristic is NOT present in β-sheets?

  • Pleated due to rippled edges (zigzag shape)
  • Twisted and pleated to make it less compact
  • Sheet arrangement with H bonds between backbone amides
  • 2 residues repeat every 7Å
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Other questions in this quiz

2. How do you know if a certain acid is strong?

  • It partially dissociates and has a Ka greater than 1
  • It completely dissociates and has a Ka greater than 1
  • It completely dissociates and has a Ka of less than 1
  • It partially dissociates and has a Ka of less than 1

3. What is the Levinthal paradox (1968)?

  • Protein folding must be predetermined as it would take a lot of time if the chain was randomly searched for the correct conformation
  • Protein folding is random and the chain is randomly searched for the correct conformation
  • Multiple conformations are attempted by proteins before the correct one is discovered
  • None of the above

4. What can protein-folding be?

  • Both
  • None of the above
  • Spontaneous
  • Assisted

5. What is the Henderson-Hasselbach equation?

  • log([A-]/[HA]) = pKa + pH
  • pH = pKa - log([A-]/[HA])
  • pH = pKa + log([A-]/[HA])
  • pKa = pH + log([A-]/[HA])

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