Biochemistry Help Please (TEST in 20 Min)?

Electoflow

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An isoelectric amino acid was dissolved in water and the resulting pH was approximately 7.6. What amino acid would possess this property?
a.alanine
b.glutamic acid
c.histidine
d. lysine

An isoelectric amino acid was dissolved in water and the resulting pH was approximately 10.7 . What amino acid would possess this property?
a.arginine
b.glutamic acid
c.histidine
d.lysine


please explain how plz thanks
 
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