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Question

An α-helix is the example of which type of protein structure?

A
Primary
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B
Secondary
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C
Tertiary
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D
Quaternary
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Solution

The correct option is B Secondary
Proteins are the polypeptides of amino acids. Proteins have a different structure which is because of a different arrangement of amino acids. The primary structure of the protein has covalent connections in the linear sequence in which amino acids are bonded together with peptide bonds. The folding of the linear polypeptide chain into a specific structure that has the alpha helix is called the secondary structure.
Thus, the correct answer is 'Secondary.'

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