Prolonged Use of Alcohol Appears to Destroy Brain Cells

question 208

Multiple Choice

Prolonged use of alcohol appears to destroy brain cells. In fact, a five-year longitudinal study found

• A)smaller ventricles among individuals with the heaviest use.
• B)reduced cortical functions in the frontal lobes.
• C)significant loss of grey matter in the temporal lobes.
• D)damage to areas responsible for cortisol secretion.

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Definitions:

Adenine Nucleotides

Organic molecules that form the building blocks of DNA and RNA and include adenine as their base, playing a key role in energy transfer within cells.

pre-mRNAs

The precursor mRNA transcripts that are synthesized from DNA and contain both introns and exons, which are modified and spliced to form mature mRNA.

Phosphate Group

A functional group consisting of a phosphorus atom covalently bonded to four oxygen atoms, important in energy transfer and storage.

Promoter Sequence

A specific region of DNA upstream of a gene that binds RNA polymerase and initiates transcription of the gene.