Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:
1. | Glycerol, trypsin | 2. | Cellulose, lecithin |
3. | Inulin, insulin | 4. | Chitin, cholesterol |
A pure protein should normally have
1. | Two ends | 2. | One end |
3. | Three ends | 4. | No ends |
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Which of the following is the least likely to be involved in stabilizing the three-dimensional folding of most proteins?
1. | Ester bonds | 2. | Hydrogen bonds |
3. | Electrostatic interaction | 4. | Hydrophobic interaction |
Identify the zwitter ion configuration of alanine:
1. | 2. | ||
3. | 4. |
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