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Theory

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Procedure

Simulation

Posttest

References

Feedback

Isoelectric Precipitation of Proteins: Casein from Milk

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1. What type of protein is casein ?

a: Sulphur containing Explanation

Explanation

b: Phosphoprotein Explanation

Explanation

c: Aminoprotein Explanation

Explanation

d: Lactoglobulin Explanation

Explanation

2. What is the role of ethanol in precipitation ?

a: To kill microbes in milk. Explanation

Explanation

b: To remove fat in milk. Explanation

Explanation

c: For salt removal. Explanation

Explanation

d: None of the above. Explanation

Explanation

3. What is Isoelectric pH ?

a: pH at which equal amounts of proton acceptor and proton donor are present. Explanation

Explanation

b: PH at which the species show maximum solubility. Explanation

Explanation

c: pH at which the charge of the species is neutral. Explanation

Explanation

d: All the above Explanation

Explanation

4. If the PH of a protein is below its isoelectric point, what will happen ?

a: Protein will aggregate. Explanation

Explanation

b: Protein will precipitate. Explanation

Explanation

c: Protein will be soluble. Explanation

Explanation

d: None of the above. Explanation

Explanation

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