Podcast
Questions and Answers
Which of the following statements about amino acids is true?
Which of the following statements about amino acids is true?
- Amino acids have only acidic properties
- Amino acids have only basic properties
- Amino acids are linear homopolymers of a-amino acids
- Amino acids have diverse physical and chemical properties (correct)
What is the common structural feature of most a-amino acids?
What is the common structural feature of most a-amino acids?
- The a-carbon has two substituents and is linear
- The a-carbon has four substituents and is tetrahedral (correct)
- The a-carbon has five substituents and is trigonal bipyramidal
- The a-carbon has three substituents and is planar
Which of the following is NOT a common feature of all amino acids (except proline)?
Which of the following is NOT a common feature of all amino acids (except proline)?
- A fourth substituent (R), unique
- A basic amino group
- An a-hydrogen connected to the a-carbon (correct)
- An acidic carboxyl group
What is the relationship between L/D and the configuration of amino acids?
What is the relationship between L/D and the configuration of amino acids?
What is the average molecular weight of an amino acid residue?
What is the average molecular weight of an amino acid residue?
Which of the following is true about peptides and proteins?
Which of the following is true about peptides and proteins?
What is the typical duration a peptide bond would last in an aqueous environment in the absence of a catalyst?
What is the typical duration a peptide bond would last in an aqueous environment in the absence of a catalyst?
Which of the following contributes to the isoelectric point (pI) of a peptide or protein?
Which of the following contributes to the isoelectric point (pI) of a peptide or protein?
Which of the following is an example of a conjugated protein?
Which of the following is an example of a conjugated protein?
What is commonly used for preparative separation of proteins?
What is commonly used for preparative separation of proteins?
Which of the following statements is true about amino acids with uncharged side chains?
Which of the following statements is true about amino acids with uncharged side chains?
Which of the following is true about the ionization of amino acids?
Which of the following is true about the ionization of amino acids?
Which of the following is true about the isoelectric point (pI) of amino acids?
Which of the following is true about the isoelectric point (pI) of amino acids?
Which of the following is true about ionizable side chains in amino acids?
Which of the following is true about ionizable side chains in amino acids?
What is the general calculation for determining the pI (isoelectric point) when the side chain of an amino acid is ionizable?
What is the general calculation for determining the pI (isoelectric point) when the side chain of an amino acid is ionizable?
