Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: Phenylketonuria is a recessive hereditary disease caused by bodys failure to oxidize an amino acid phenylalanine to tyrosine, because of defective enzyme. Reason: It results the presence of phenylalanine acid in urine.A) If both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B) If both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
C) If Assertion is true, but Reason is false.
D) If both Assertion and Reason are false.
Correct Answer: A
Solution :
Phenylketonuria is due to deficiency of liver enzyme. Phenylalanine hydroxylase which converts phenylalanine into tryosine. It occurs in persons who are homozygous recessive. It results with a high level of phenylalanine in blood, tissue fluids and urine.
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