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PrincesssOfficial
30.08.2019 •
Biology
Which of the following constitutes the primary structure of a protein?
a. the folding of a polypeptide chain
b. the linear sequence of amino acids in a polypeptide chair
c. the polypeptide chains stacked on top of each other
d. a pleated sheet
e. several polypeptide subunits
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Ответ:
B. The linear sequence of amino acids in a polypeptide chain.
Explanation: Protein structure is the three dimensional arrangement of amino acid molecules in polypeptide chain.
Protein has four types of structure -
1-Primary structure
2-secondary structure
3- Tertiary structure
4- Quaternary structure
Primary structure of protein is the simplest form of protein where amino acids are arranged in linear way. One end of polypeptide chain is Called C-terminal (Carboxyl group )and other is called N terminal (amino group). Peptide bods play important role in establishing primary structure of protein.
Ответ:
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