1
Question
The primary structure of a protein can be affected by
I. Genetic mutation
II. Increase in temperature
III. Decrease in pH
The primary structure of a protein can be affected by
I. Genetic mutation
II. Increase in temperature
III. Decrease in pH
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Solution
The correct option is A I only
Primary structure of a protein refers to the chain of amino acids bonded by the peptide bond. Any change in the nucleotide sequence of DNA alters the genetic codon and thereby alters the amino acid sequence of proteins. So, primary structure is affected by genetic mutations. Temperate rise and the decrease in pH affect the weak inter and intra molecular secondary linkages but the peptide bonds and the primary structure of proteins are not affected. Thus, the correct answer is option A.
Primary structure of a protein refers to the chain of amino acids bonded by the peptide bond. Any change in the nucleotide sequence of DNA alters the genetic codon and thereby alters the amino acid sequence of proteins. So, primary structure is affected by genetic mutations. Temperate rise and the decrease in pH affect the weak inter and intra molecular secondary linkages but the peptide bonds and the primary structure of proteins are not affected. Thus, the correct answer is option A.
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