Concept explainers
(a)
Interpretation: The number of different primary structures possible for a four-amino-acid segment of a protein, if the segment contains two glycine units and two alanine units has to be stated.
Concept introduction: The primary protein structure is the order of linking of the amino acids in proteins. The primary protein structure includes the number of amino acids linked, kind of amino acids present and the order of attachment of amino acids.
(b)
Interpretation: The number of different primary structures possible for a four-amino-acid segment of a protein, if the segment contains two glycine units, one alanine unit, and one valine unit has to be stated.
Concept introduction: The primary protein structure is the order of linking of the amino acids in proteins. The primary protein structure includes the number of amino acids linked, kind of amino acids present and the order of attachment of amino acids.
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Organic And Biological Chemistry
- Which of the following describes the primary structure of proteins? a. The collective shape assumed by all of the chains in a protein containing multiple chains. b. The folding of an individual protein molecule. c. The regular repeated shape of the protein molecules backbone. d. The sequence of amino acids bonded together by peptide bonds.arrow_forwardAt room temperature, amino acids are solids with relatively high decomposition points. Explain why.arrow_forwardWhat characteristics indicate that amino acids exist as zwitterions?arrow_forward
- Which of the following are true concerning the chemical bond that forms between the carboxyl (RCOOH) group of one amino acid and the amino (RCNH2) group of another? a.The bond is called a peptide bond. b.It is formed by inserting a water molecule between them. c.It is formed by a dehydration reaction. d.A polypeptide has more of these bonds than a protein.arrow_forwardHow many different primary structures are possible for a four-amino-acid segment of a protein if the segment contains a. two glycine units and two alanine units b. two glycine units, one alanine unit, and one valine unitarrow_forwardWhat element is always present in proteins that is seldom present in carbohydrates and lipids?arrow_forward
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