Concept explainers
(a)
Interpretation: The name of the standard amino acids that have side chains with the given characteristic has to be stated.
Concept introduction: Amino acid is a compound that is composed of
(b)
Interpretation: The name of the standard amino acids that have side chains with the given characteristic has to be stated.
Concept introduction: Amino acid is a compound that is composed of
(c)
Interpretation: The name of the standard amino acids that have side chains with the given characteristic has to be stated.
Concept introduction: Amino acid is a compound that is composed of
(d)
Interpretation: The name of the standard amino acids that have side chains with the given characteristic has to be stated.
Concept introduction: Amino acid is a compound that is composed of
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Chapter 20 Solutions
GENERAL,ORGANIC,+BIO.CHEM.-MINDTAP
- What functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?arrow_forwardWhich 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_forward(a) How many tripeptides can be made from glycine, alanine, and leucine, using each amino acid only once per tripeptide? (b) Write the structural formulas of these tripeptides and name them in the shorthand abbreviation used for showing amino acid sequences.arrow_forward
- To which family of mirror-image isomers do nearly all naturally occurring amino acids belong?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
- Fill in the blanks in the following statements: aThe order of the amino acids in a protein is the ______ structure of that protein. The _______ of the backbone chain of a protein is the secondary structure of that protein. The tertiary structure of a protein describes the ______ of the secondary structure. b Hydrogen bonding between the oxygen atoms of carbonyl groups and the hydrogen atoms of amide groups in the same protein chain gives the secondary structure, called the ______. c Hydrogen bonding between the oxygen atoms of carbonyl groups and the hydrogen atoms of amide groups in the adjacent protein chain gives the secondary structure, called the ______.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_forwardDraw a segment of the backbone of a protein that is long enough for three peptide linkages to be present.arrow_forward
- What characteristics indicate that amino acids exist as zwitterions?arrow_forwardWhat element is always present in proteins that is seldom present in carbohydrates and lipids?arrow_forwardIn a pleated sheet secondary structure for a protein a. describe the general shape of the protein backbone b. describe the general locations for the amino acid R groupsarrow_forward
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