Down Syndrome

question 9

Multiple Choice

Down syndrome:

• A)is a form of mental retardation.
• B)affects males more than females.
• C)occurs when an individual gets an extra copy of chromosome 23.
• D)results in a life expectancy of about 18 years.

---

Definitions:

Microorganisms

Microscopic entities, including bacteria and viruses, that may cause infectious diseases but also play essential roles in ecosystems.

Ictotest

A diagnostic test used specifically for detecting the presence of bilirubin in urine, which can indicate liver damage or disease.

Bilirubin

A yellow breakdown product of normal heme catabolism. Its levels are elevated in certain diseases, and it is responsible for the yellow color of bruises and the brown color of feces.

Ammonia

A colorless gas with a distinct sharp smell, commonly used in cleaning products and as a fertilizer, and also produced naturally in the human body.