Which of the Following Is True of Phenylketonuria

question 135

Multiple Choice

Which of the following is true of phenylketonuria?

• A) It results from a recessive gene.
• B) It is a chromosomal disorder.
• C) It results in death by the age of five.
• D) It is caused by an accumulation of lipids in the nervous system.

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Definitions:

Clot Formation

The process by which blood changes from a liquid to a gel, forming a clot, which is essential in preventing excessive bleeding when blood vessels are injured.

Thrombin

An enzyme in blood plasma that causes the clotting of blood by converting fibrinogen to fibrin.

Prothrombin

A protein present in blood plasma that is converted into active thrombin during coagulation, playing a key role in blood clot formation.

Fibrinogen

A soluble plasma protein that is converted to the insoluble protein fibrin during blood clotting.