The Most Dangerous Time for a Baby to Be Exposed

question 115

Multiple Choice

The most dangerous time for a baby to be exposed to most chemical teratogens is

• A) at conception.
• B) during birth.
• C) at the age of viability.
• D) when the child's organs are growing most rapidly.

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Definitions:

Enduring Truth

A concept or fact that remains valid and reliable over time.

Phenomena

Observable events or occurrences that can be studied scientifically to understand natural or social processes.

Phenylketonuria (PKU)

A genetic disorder caused by a defect in the gene responsible for processing the amino acid phenylalanine, leading to its accumulation and resulting in cognitive disability if untreated.

Phenylalanine

An essential amino acid that is a precursor for neurotransmitters such as dopamine and norepinephrine, important for brain function.