This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: HMP Shunt Pathway, Fructose, Galactose Metabolism, Subject name: Biochemistry
Fructose intolerance is due to deficiency of? 
Select and explain. 
A. Aldolase B, B. Fructokinase, C. Triokinase, D. Aldolase A
A: Aldolase B
Answer: A: Aldolase B 
Explanation: Ans. is 'a' i.e., Aldolase B DiseaseDificient enzymesEssential fructosuriaFructokinaseHereditary fructose intoleranceAldolase-BGalactosemiaGalactose-1-phosphate uridyl transferase (most common), Galactokinase UDP-galactose-4-epimeraseLactose intoleranceLactase (b-galactosidase)Essential pentosuriaL-xylulose dehydrogenase (xylulose reductase)