Concept explainers
(a)
Interpretation:
The tyrosine amino acid needs to be classified as non-polar or polar. If it is polar then the R group needs to be classified as neutral, acidic or basic. Also, if it is hydrophobic or hydrophilic needs to be identified.
Concept Introduction :
The amino acid consists of two functional groups that is amino group as well as
(b)
Interpretation:
The leucine amino acid needs to be classified as non-polar or polar. If it is polar then the R group needs to be classified as neutral, acidic or basic. Also, if it is hydrophobic or hydrophilic needs to be identified.
Concept Introduction :
The amino acid consists of two functional groups that is amino group as well as carboxylic acid group. There are 20 essential amino acids which are different from each other due to the different R group attached to the carbon containing amino as well as carboxyl groups.
(c)
Interpretation:
The methionine amino acid needs to be classified as non-polar or polar. If it is polar then the R group needs to be classified as neutral, acidic or basic. Also, if it is hydrophobic or hydrophilic needs to be identified.
Concept Introduction :
The amino acid consists of two functional groups that is amino group as well as carboxylic acid group. There are 20 essential amino acids which are different from each other due to the different R group attached to the carbon containing amino as well as carboxyl groups.
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EP BASIC CHEMISTRY-STANDALONE ACCESS
- To which family of mirror-image isomers do nearly all naturally occurring amino acids belong?arrow_forwardConsider the tripeptide leucylvalyltryptophan. 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 a basic side chain?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_forward
- For the tripeptide AlaValGly which amino acid residues, if any, a. are hydrophilic b. are hydrophobic c. possess nonpolar R groups d. participate in two amide linkagesarrow_forwardConsider 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_forwardIn what way is the structure of glycine different from that of the other 19 common amino acids?arrow_forward
- What functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?arrow_forwardWhat characteristics indicate that amino acids exist as zwitterions?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
- 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_forwardHow many carbon atoms are present in the R group in each of the following standard amino acids?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
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