Due to an Enzyme Defect, Individuals with Phenylketonuria Cannot Convert

question 11

Multiple Choice

Due to an enzyme defect, individuals with phenylketonuria cannot convert the amino acid phenylalanine to

• A) urea.
• B) tyrosine.
• C) ketones.
• D) serotonin.
• E) ATP.

---

Definitions:

5th Wheel

A coupling device used primarily in semi-trucks to attach a trailer, characterized by a large pivoting plate.

Upper Coupler Assembly

The component at the front of a semi-trailer that hooks onto the hitch of a truck tractor, providing a connection point.

SAE Grade 8

A classification for high-strength bolts according to the Society of Automotive Engineers, indicating a high level of tensile strength.

Hook to Latch Clearance

Hook to latch clearance refers to the distance or space between a hook and latch mechanism, critical in ensuring a secure fit and operation of closures in vehicles.