BIOMOLECULES AND ENZYMES

BIOLOGY

STRUCTURE OF PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which level of protein structure is primarily formed by hydrogen bonds between regions of the carbon backbone?
A
Primary
B
Secondary
C
Tertiary
D
Quaternary
Explanation: 

Detailed explanation-1: -The secondary structure contains regions of amino acid chains that are stabilized by hydrogen bonds from the polypeptide backbone. These hydrogen bonds create alpha-helix and beta-pleated sheets of the secondary structure.

Detailed explanation-2: -The secondary structure consists of local packing of polypeptide chain into -helices and -sheets due to hydrogen bonds between peptide bond – central carbon backbone.

Detailed explanation-3: -Secondary structure The most common types of secondary structures are the helix and the pleated sheet. Both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.

Detailed explanation-4: -Answer and Explanation: The structure of protein in which hydrogen bonds begin to form between the polypeptide backbone is the secondary structure.

Detailed explanation-5: -Secondary structure refers to regular, recurring arrangements in space of adjacent amino acid residues in a polypeptide chain. It is maintained by hydrogen bonds between amide hydrogens and carbonyl oxygens of the peptide backbone. The major secondary structures are -helices and -structures.

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