Asked by shakeithia brice on Sep 23, 2024
Verified
Which amino acid's side chain is negatively charged at biological pH, pH = 7.4?
A) arginine
B) tyrosine
C) aspartic acid
D) serine
E) glutamine
Side Chain
An alkyl or other group of atoms attached to a main part of a molecule, influencing its properties and reactions.
Biological pH
A measure of the acidity or basicity of a biological system, reflecting its hydrogen ion concentration.
Aspartic Acid
A non-essential amino acid in humans that plays a crucial role in the biosynthesis of other amino acids and in the urea cycle.
- Identify the charge properties of amino acids at various pH values, including biological pH.
- Recognize the side chain properties of amino acids and how they influence amino acid behavior in biological contexts.
Verified Answer
JU
Jalal Uddin4 days ago
Final Answer :
C
Explanation :
At pH 7.4, aspartic acid's side chain will be negatively charged due to the presence of a carboxyl group (-COO-).
Learning Objectives
- Identify the charge properties of amino acids at various pH values, including biological pH.
- Recognize the side chain properties of amino acids and how they influence amino acid behavior in biological contexts.