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
(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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Basic Chemistry
- 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_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
- 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_forwardIn what way is the structure of glycine different from that of the other 19 common amino acids?arrow_forwardWhat characteristics indicate that amino acids exist as zwitterions?arrow_forward
- 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 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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