14 Questions
Which group gives unique characteristics bounded to the α-carbon chain in amino acids?
Side group R
At physiological pH, what charge does the carboxyl group of an amino acid have?
Negatively charged
What is the isoelectric point of a zwitterionic structure?
Neutral
What is the approximate molecular weight of amino acids?
~135 daltons
Which amino acid does NOT have a primary amino group?
Proline
In which environment do amino acids dissociate protons to form carboxyl anions?
Basic environment
Which type of amino acid contains more atoms of nitrogen?
Basic amino acids
What is the term used for the free amino group at the beginning of a polypeptide chain?
N-terminus
Which amino acid contains a sulfhydryl group that can be oxidized to form a dimer called Cystine?
Cysteine
In proteins, almost all carboxyl and amino groups are combined in which type of linkage?
Peptide linkage
Which amino acid classification includes those with R groups containing polar hydrophilic groups?
Polar amino acids
Which type of amino acid R group is an alkyl hydrophobic group that can't form hydrogen bonds?
Nonpolar amino acids
According to the new UIPAC nomenclature, what has replaced the L- & D- forms for amino acid configuration?
(S)- & (R)- system
Which pair of molecules are involved in the transport function of proteins?
Hemoglobin and lactose permease
Test your knowledge of protein structure and amino acids with this overview quiz. Explore the diverse functions of proteins and the characteristics of α-amino acids. Evaluate your understanding of biomolecules and their unique properties.
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