A three banded isoenzyme pattern with a 1:2:1 intensity ratio indicates a <u>dimeric</u> protein. 
- Isozyme is a multimeric forms of enzyme having similar specificity of the substrate but differences in kinetics and molecular weights of the enzymes. 
- The banding patterns of isozyme observed from electrophoresis is related to the genetic conditions in which different combination of polypeptide chains exhibited under the mendelian principles. 
- Hence with the intensity of 1:2:1 ratio, three banded phenotypes are formed having two homomeric and one heteromeric form from the dimeric protein in both multiple alleles at single loci and multiple /single allele at multiple loci. 
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Answer:  Typed 2 diabetes; because plasma glucose molecules are retained in the blood and  not able to enter     the cells.
Explanation:
He suffered from type 2 diabetes because,  the ketoacidosis was due to  breakdown of fats in the liver  due to low glucose in the cells, while the hypoglycemia was due to   retention of  plasma glucose in the blood instead of entering the cells.
 
        
             
        
        
        
Proteins serve as antibodies.