Biology Biotechnology and Its Application All Topic Question For Revision Test Single Correct MCQ
Published on: August 12, 2026

ADA deficiency is -

A
Deficiency of energy due to the lack of ATP
B
Malfunctioning of body due to the deficiency of adenosine diahydrase
C
Malfunctioning of immune system due to the deficiency of adenosine deaminase
D
A genetic disorder which has no cure at present

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The correct answer is:
C

ADA (Adenosine Deaminase) deficiency causes SCID (Severe Combined Immunodeficiency Disease). Due to the lack of ADA enzyme, the immune system does not function properly, leading to severe immunodeficiency.

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