Question

Why does a protein not function after it has been denatured? A.The normal bonding between the R groups has been disturbed and the protein loses its normal shape. B. The normal bonding between the beta sheets has been disturbed and the protein loses its normal shape. C. The normal bonding between the hydrogens in the alpha helix has been disturbed and the protein loses its normal shape. D. The R groups form additional bonds causing the structure to become more compact. E. The normal peptide bonds are ruptured and the individual amino acids are not held together any more

Answer 1

The correct answer is C. The normal bonding between the hydrogens in the alpha helix has been disturbed and the protein loses its normal shape.

Step-by-step explanation:

Protein becomes nonfunctional when it gets denatured. A functional protein contains alpha helix and beta sheets which represents the secondary structure of proteins. Both of these structures are stabilized by hydrogen bonds. They helps in providing a native structure of a protein

When this native structure is lost the protein becomes denatured. The breaking of hydrogen bond destabilizes the secondary structure like alpha helix which results in losing protein shape and function which is called protein denaturation. So the right answer is C.