Podcast
Questions and Answers
How many different amino acids are known to occur naturally?
How many different amino acids are known to occur naturally?
- 8
- 12
- Over 700 (correct)
- 20
What is the characteristic of Proline among the standard amino acids?
What is the characteristic of Proline among the standard amino acids?
- It is an essential amino acid that must be obtained from the diet
- It has a cyclic side chain that incorporates the α-amino function (correct)
- It has a side chain represented by R
- It is not coded for in DNA-directed protein synthesis
How many of the standard amino acids are synthesized by the human body?
How many of the standard amino acids are synthesized by the human body?
- 8
- 12 (correct)
- 20
- 15
What is the classification of amino acids based on?
What is the classification of amino acids based on?
What is the characteristic of Glycine among the standard amino acids?
What is the characteristic of Glycine among the standard amino acids?
What is the primary form of amino acids in strongly acidic solutions?
What is the primary form of amino acids in strongly acidic solutions?
At what pH do the concentrations of the anions and cations of an amino acid become equal?
At what pH do the concentrations of the anions and cations of an amino acid become equal?
What is the term for the form of an amino acid in which the carboxyl group is present as a carboxylate ion and the amino group is present as an aminium ion?
What is the term for the form of an amino acid in which the carboxyl group is present as a carboxylate ion and the amino group is present as an aminium ion?
How is the isoelectric point (pI) of an amino acid such as alanine calculated?
How is the isoelectric point (pI) of an amino acid such as alanine calculated?
What is the term for the pH at which an amino acid has no net charge?
What is the term for the pH at which an amino acid has no net charge?
