Acid-Base Definitions
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Question 1 of 6
1. Question
Which of the following species would be characterized as an Arrhenius base?
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Question 2 of 6
2. Question
Which of the following species would be characterized as an Arrhenius acid?
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Question 3 of 6
3. Question
Which of the following species would be considered a Brønsted-Lowry base but not an Arrhenius base?
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Question 4 of 6
4. Question
Which of the following is a Lewis acid, but not a Brønsted-Lowry acid?
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Question 5 of 6
5. Question
In hemoglobin the central iron ion is coordinated by porphyrin, a tetradentate ligand. In hemoglobin the iron center is classified as a:
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Question 6 of 6
6. Question
Zinc fingers are small structural protein motifs that help stabilize folds within the secondary structure of proteins. These fingers are characterized by the coordination of Zn2+ ions by Cys and His residues which form coordinate covalent bonds with zinc using the lone pairs found on atoms within the amino acid’s side chains.
Based on this information Histidine and Cysteine are best characterized as a:
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