Phenylketonuria (PKU) is caused by___

I-Mutation of the gene for phenylalanine hydroxylase

II-tetrahydrobiopterin (BH4) deficiency

III-mutation in dihydroxyphenylalanine 

IV-due to the substitution mutation in tetrahydrobiopterin

TLS Online TPP Program

#Question id: 39356

#Environmental Science

Q. The ozone hole is most prominently observed over:

TLS Online TPP Program

#Question id: 39357

#Environmental Science

Q. Which of the following chemicals has the highest ozone depletion potential (ODP)?

TLS Online TPP Program

#Question id: 39358

#Environmental Science

The international agreement aimed at controlling ozone-depleting substances is:

TLS Online TPP Program

#Question id: 39359

#Environmental Science

Which element released from CFCs directly destroys ozone molecules?

TLS Online TPP Program

#Question id: 39360

#Environmental Science

Q. Ozone depletion results in increased:

TLS Online TPP Program

#Question id: 39361

#Environmental Science

 Increased UV-B radiation can cause all EXCEPT: