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lutik1710
2 months ago
12

Which of the following statements is an accurate description of proteins? Which of the following statements is an accurate descr

iption of proteins?
A. The primary structure of a protein is the order of amino acids in a polypeptide, as coded for in the DNA of a gene.
B. The 20 amino acids found in proteins differ in the composition of their R groups, which may be either polar or charged.
C. Secondary structures, which include the alpha helix or beta pleated sheet, are held together by interactions between R groups.
D. Tertiary structure is the overall shape of a polypeptide, which may be stabilized by hydrophobic interactions, hydrogen bonds, ionic bonds, and peptide bonds.
E. Quaternary structure is only found in proteins that have four identical polypeptide subunits.
Biology
2 answers:
inysia [2.3K]2 months ago
5 0

Answer:

b. the composition of R groups varies among the 20 amino acids in proteins, which can be either polar or charged.

Explanation:

As proteins consist of numerous amino acids connected together, their connections occur uniformly across all amino acids because one segment remains identical among them all.

The remainder of each amino acid, known as the R group, differs across the various types, defining their unique characteristics and contributing to their chemical properties.

s2008m [2.3K]2 months ago
4 0

Answer:

A. The primary structure denotes the sequence of amino acids in a polypeptide, as dictated by the gene's DNA.

Explanation:

The primary structure represents the backbone of a protein, formed through the connection of amino acids, reflecting the exact sequence they occupy. Put differently, the primary structure is the arrangement of amino acids in a polypeptide, as specified by the DNA found in a gene.

That same protein can develop secondary, tertiary, and even quaternary structures due to intermolecular interactions either within the protein itself or amongst various protein chains.

A protein must consist of a minimum of 50 amino acids, and its primary structure reflects their order as determined by the underlying DNA.

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