Home
Class 12
BIOLOGY
Assertion : Phenylpyruvic acid is excret...

Assertion : Phenylpyruvic acid is excreted through urine in case of phenylketonuria
Reason : The affected individual lacks enzyme phenylalanine hydroxylase.

A

If both A and R are true and R is the correct explanation of A.

B

If both A and R are true but R is not the correct explanation of A.

C

If A is true but R is false

D

A is false but R is true.

Text Solution

Verified by Experts

The correct Answer is:
C
Phenylketonuria is the inborn error in metabolism . This disease is associated with metabolic breakdown of phenylalanine . The disease occurs due to accumulation of phenylpyruvic acid and causes mental disorder.
Promotional Banner

Similar Questions

Explore conceptually related problems

An inborn error of metabolism in which the affected individual lacks an enzyme that converts aminoacid phenylalanine into tyrosine is

A person affected with phenylketonuria lacks an enzyme that converts the amino acid phenylalanine into :

Assertion : Phenylketonuria, Haemophilia and sickle cell anemia are genetic disorders. Reason : In phenylketonuria the person has a non-functional enzyme for the conversion of phenylalanine to tyrosine.

Assertion All Pila are ammonotelic . Reason Pila excrete uric acid .

Assertion : Phenylketonuria is a recessive hereditary disease caused by the body 's failure to oxidize an amino acid phenylalanine to tyrosine , because of a defective enzyme. Reason : It results in the presence of phenylalanine acid in the urine .

Which one among the following substances is never excreted out through urine normal circumstances in any healthy individual?

Assertion :- In fish ammonia is excreted by diffusion through gill surface as ammonium ions. Reason :- Some amount of urea may be retained in the kidney matrix of some animals to maintain a desired osmolarity.

Assertion (A) Glycine must be taken through diet. Reason (R) It is an essential amino acid.

Assertion. Alcoholism and tobacco smoking are regarded social diseases. Reason. Both adversely affect the individuals and their families.

Assertion : Magnesium oxide is used for brick lining in steel making furnace. Reason : It reacts with acidic impurities through slag formation.