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Biomacromolecules and Micromolecules

Upon denatura...

Question

Upon denaturation, a protein loses its

A

primary structure

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B

peptide bonds

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C

sequence of amino acids

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D

three dimensional shape

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Solution

The correct option is D three dimensional shape
A protein loses its tertiary and secondary structures upon denaturation.

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Q. Read the given paragraph and write answers of the following questions.
Protein is very essential for the growth, development and maintenance of living systems. Proteins are natural polymer of

α -

amino acids. A definite sequence of amino acids form a specific protein. Two or more than two amino acids bind to give peptide bond. Proteins are polypeptide, which loses its biological activity by physical or chemical changes.
(A) Explain essential and non-essential amino acid with example.
(B) Explain denaturation of protein.

Q. What does a protein lose when it denatures?

Q. Assertion :Proteins are made up of any

α

-amino acid. Reason: During denaturation,primary structure of proteins is not affected.

Q. Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Proteins are made up of alpha amino acids.
Reason (R): During denaturation, secondary and tertiary structure of proteins are destroyed.

Q. Define the following with an example for each

(a) Polysaccharides

(b) Denatured protein

(c) Essential amino acids.

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