An Abundance of Abnormal Structures Called Beta-Amyloidplaques and Neurofibrillary Tangles

question 249

True/False

An abundance of abnormal structures called beta-amyloidplaques and neurofibrillary tangles are present in the brains of people with Alzheimer's disease.

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Definitions:

Pleistocene

The geological epoch from about 2.6 million to 11,700 years ago, characterized by the last ice ages and the emergence of Homo sapiens.

Carboniferous

A geologic period and system that spans 60 million years from the end of the Devonian Period 358.9 million years ago, to the beginning of the Permian Period.

Ordovician

A geologic period and system of the Paleozoic Era, occurring around 485 to 444 million years ago, noted for its high levels of marine biodiversity.

Pleistocene

An epoch of the geological time scale, lasting from about 2.6 million to 11,700 years ago, marked by repeated glacial cycles.