12 Questions
What is the main function of amino acids in living organisms?
Acting as building blocks for proteins
Which part of an amino acid is unique and varies among the 20 different types?
R group (side chain)
What type of carbon is the chiral center in an amino acid?
α carbon
Why is glycine considered a unique amino acid among the 20 common types?
It has a second hydrogen atom instead of an R group
Which functional group is attached to the α-carbon in amino acids?
Amino group
Which type of amino acids are relatively nonpolar and hydrophobic?
Aromatic
Which amino acid residues have the secondary amino (imino) group held in a rigid conformation?
Proline
Which amino acid is an example of an imino acid with the -NH2 group bound in a ring structure?
Proline
Which amino acid can form hydrogen bonds due to the presence of a hydroxyl group?
Tyrosine
Which class of amino acids includes phenylalanine, tyrosine, and tryptophan?
Aromatic
Which type of amino acids are significantly more polar than phenylalanine?
Polar, uncharged
Which amino acid is an example of a simple amino acid with a non-polar aliphatic R group?
Valine
Learn about the common set of 20 amino acids used to construct proteins, the distinctive chemical properties of amino acid side chains, and the common structural features of amino acids. Explore how amino acids are the building blocks for protein structure.
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