Asked by Rebecca Gottlieb on Jun 03, 2024

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Verified

A disorder in which the liver fails to produce a certain enzyme necessary for early brain development is ________.

A) Down syndrome
B) PKU
C) fragile-X syndrome
D) Tay-Sach's disease

Tay-Sach's Disease

A genetic disorder that destroys nerve cells in the brain and spinal cord, leading to severe physical and developmental disabilities in infants.

PKU

A genetic disorder leading to the buildup of phenylalanine in the body, which can result in intellectual disabilities if not treated.

Enzyme

Proteins that act as biological catalysts to speed up chemical reactions in living organisms.

  • Identify and describe conditions impacting early brain development.
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Verified Answer

KA
Kulkeyev AlisherJun 08, 2024
Final Answer :
B
Explanation :
PKU (phenylketonuria) is a genetic disorder in which the liver fails to produce the enzyme phenylalanine hydroxylase, which is necessary for the breakdown of the amino acid phenylalanine. Without this enzyme, phenylalanine builds up in the blood and can cause brain damage. It is important for individuals with PKU to adhere to a special low-phenylalanine diet to prevent cognitive impairment.