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Biochemistry Lab 3: Denaturing of Proteins

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Biochemistry Lab 3: Denaturing of Proteins

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Questions and Answers

What is denaturation of proteins?

A process where a protein increases in size due to the addition of amino acids

A process where a protein loses its native shape and becomes biologically inactive (correct)

A process where a protein gains its native shape

A process where a protein changes its function

Which factor causes denaturation of proteins by disrupting hydrophobic interactions?

Acid

Radiation

Alcohol (correct)

Heat

How does changing pH affect protein denaturation?

It enhances the protein's biological activity

It denatures the protein by altering charges on side chains (correct)

It decreases the size of the protein

It has no effect on the protein's structure

Which of the following is NOT an agent causing denaturation of proteins?

Enzymes Signup and view all the answers

What happens to a denatured antibody?

It loses its ability to bind to antigens Signup and view all the answers

Why does increasing temperature lead to protein denaturation?

It disrupts the attractive forces that hold the protein's shape Signup and view all the answers

What is the denaturation process that occurs at higher temperatures called?

Heat denaturation Signup and view all the answers

During denaturation, which type of bond is NOT broken?

Peptide bonds Signup and view all the answers

What is the purpose of adding egg white to boiling water in the experiment described?

To observe heat denaturation Signup and view all the answers

What happens when egg white is subjected to vigorous shaking in a container?

Mechanical denaturation Signup and view all the answers

Which component is NOT used in the experiment described for observing denaturation?

Vinegar Signup and view all the answers

What bonds are broken during denaturation according to the text?

Disulfide bonds and hydrophobic interactions Signup and view all the answers