Which Form of Mental Retardation Is Caused by the Presence

question 139

Multiple Choice

Which form of mental retardation is caused by the presence of an extra chromosome

• A) Down syndrome 
• B) psychosocial 
• C) phenylketonuria 
• D) hydrocephaly

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Definitions:

Cytology

Study of anatomy, physiology, pathology, and chemistry of the cell.

Molecular Biology

The branch of biology that deals with the structure and function of the macromolecules (e.g., proteins and nucleic acids) essential to life.

Microbiology

The study of microscopic organisms, including viruses, bacteria, archaea, fungi, and protozoa.

Surface Anatomy

The study of the external features of the body and their relationship to deeper structures, used in medical training to locate organs and make diagnoses.