The Exact Cause of Bipolar Disorder Has Not Been Determined;

question 8

Multiple Choice

The exact cause of bipolar disorder has not been determined; however, for most patients

• A) several factors, including genetics, are implicated.
• B) brain structures were altered by stress early in life.
• C) excess sensitivity in dopamine receptors may trigger episodes.
• D) inadequate norepinephrine reuptake disturbs circadian rhythms.

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Definitions:

MicroRNA

Small non-coding RNA molecules involved in gene regulation by interfering with the translation of mRNA into proteins.

Cytoplasm

The gel-like substance inside a cell, excluding the nucleus, containing organelles in which the cell's processes occur.

Activators

Proteins that bind to specific DNA sites to increase the likelihood of transcription of a particular gene.

Transcription

The act of transferring the encoded information from a DNA strand into a novel molecule of messenger RNA (mRNA).