Virtual Labs

Physical Sciences Food Chemistry Lab Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Study of some processing changes in proteins

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Beginner

Intermediate

Advanced

1.Which factor has the most significant effect on protein solubility near its isoelectric point?

a: Temperature Explanation

Explanation

b: pH Explanation

Explanation

c: Light exposure Explanation

Explanation

d: Mechanical agitation Explanation

Explanation

2. What happens to the solubility of a protein at its isoelectric point?

a: It increases Explanation

Explanation

b: It decreases Explanation

Explanation

c: It remains constant Explanation

Explanation

d: It becomes unstable Explanation

Explanation

3. What is the purpose of shaking the conical flasks during the experiment?

a: To mix the protein solution uniformly Explanation

Explanation

b: To increase the solubility of the protein Explanation

Explanation

c: To help filter the solution Explanation

Explanation

d: To precipitate the protein Explanation

Explanation

4. What is the role of buffer solutions in this experiment?

a: To control the temperature Explanation

Explanation

b: To adjust the pH of the protein solution Explanation

Explanation

c: To dissolve the protein Explanation

Explanation

d: To separate the protein from the filter paper Explanation

Explanation

5. What will be the expected result of this experiment?

a: A curve showing solubility (%) against pH Explanation

Explanation

b: A color change indicating protein breakdown Explanation

Explanation

c: A fixed solubility percentage across all pH values Explanation

Explanation

d: No change in protein solubility Explanation

Explanation

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