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Nervous System Functioning › View

Parkinson’s disease motor symptoms are most commonly associated with

A. an excessive amount of dopamine in motor pathways.

B. loss of dopamine as it travels along motor pathways.

C. overproduction of dopamine in the substantia nigra.

D. a depleted amount of dopamine in the substantia nigra.

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Molecular Genetics › View

A virus consisting of a single strand of RNA, which is reverse transcribed into complementary DNA, is referred to as a ________.

A. bacteriophage

B. retrovirus

C. prion

D. virulent phage

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