Phenylketonuria Is A(n)

question 52

Multiple Choice

Phenylketonuria is a(n)

• A) inborn error of metabolism.
• B) another term for Down syndrome.
• C) a chromosome abnormality.
• D) a drug used to treat metabolic disorders.

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Definitions:

Iris

The colored part of the eye that controls the size of the pupil and the amount of light reaching the retina.

Substage

In microscopy, the part of the microscope below the stage, often housing the illuminator and condenser, used to adjust the intensity and focus of light on the specimen.

Revolving Nosepiece

A component of a microscope that holds multiple objective lenses and allows the user to switch between them.

Coarse Adjustment

The feature on a microscope that allows for large, rapid changes in focus, usually done before fine adjustments.