Concept explainers
(a)
Interpretation: The structural formula for the products obtained when the tripeptide, Thr–Leu–Ile undergoes complete hydrolysis under acidic conditions has to be stated.
Concept introduction: The complete hydrolysis of protein results into constituent amino acids. The component amino acids of the protein are obtained due to the breakdown of all the peptide bonds.
(b)
Interpretation: The structural formula for the products obtained when the tripeptide, Thr–Leu–Ile undergoes complete hydrolysis under basic conditions.
Concept introduction: The complete hydrolysis of protein results into constituent amino acids. The component amino acids of the protein are obtained since, all of the peptide bonds break.
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Chapter 20 Solutions
General, Organic, and Biological Chemistry
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- Consider the tripeptide tyrosylleucylisoleucine. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has an acidic side chain?arrow_forwardWhat is the basis for deciding if a substance is a lipid?arrow_forward21-85 Which of the following statements is (are) consistent with what is known about membranes? (a) A membrane consists of a layer of proteins sandwiched between two layers of lipids. (b) The compositions of the inner and outer lipid layers are the same in any individual membrane. (c) Membranes contain glycolipids and glycoproteins. (d) Lipid bilayers are an important component of membranes. (e) Covalent bonding takes place between lipids and proteins in most membranes.arrow_forward
- What functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?arrow_forwardFor the tripeptide SerArgIle which amino acid residues a. are hydrophilic b. are hydrophobic c. possess polar neutral R groups d. participate in two amide linkagesarrow_forwardIn what way is the structure of glycine different from that of the other 19 common amino acids?arrow_forward
- The following is a block diagram for a glycerophospholipid where the building blocks are labeled with letters and the linkages between building blocks are labeled with numbers. a. Which building blocks are fatty acid residues? b. Which building blocks are alcohol residues? c. Which linkages are ester linkages? d. Which linkages involve a phosphate residue?arrow_forward22-104 Why is collagen not a very good source of dietary protein?arrow_forwardWhich 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_forward
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