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1. What enzyme is used to degrade a protein sample prior to mass spec analysis?
- Pepsin
- Papain
- Trypsin
- Subtilisin
- Chymotrypsin
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Other questions in this quiz
2. After electrophoresis proteins can be stained with ...
- All answers
- silver nitrate
- copper phthalocyanine
- Coomassie Blue
- imido black
3. Electrophoresis in the presence of a detergent (SDS-PAGE) separates polypeptides by ...
- their size
- the presence of hydrophobic amino acids
- the presence of H-bonds
- the presence of ionic amino acids
- their charge
4. What character of the peptide bond provides stability to peptide chains?
- Partial double bond character
- Ionic stability character
- H-bonding
- Co-operative covalent bonding
- Dipole interactions
5. What is the approximate time for a haemoglobin alpha subunit (Mr 16,000) to be synthesised?
- 30 sec
- 120 sec
- 10 sec
- 90 sec
- 60 sec
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