An Older Male Adult Comes to a Primary Care Setting

question 3

Multiple Choice

An older male adult comes to a primary care setting, and his reason for seeking health care is to get a prescription for sildenafil (Viagra) .Which laboratory report can help to explain why this individual needs sildenafil?

• A)Serum potassium 4.5 mEq/L
• B)Prothrombin time 13 seconds
• C)Hemoglobin 140-180 g/L (14.0-18.0 g/dL)
• D)Glycosylated hemoglobin (Hgb A1c) over 8%

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Definitions:

mRNA Strand

A single-stranded molecule in cells that carries codes from the DNA in the nucleus to sites of protein synthesis in the cytoplasm.

Ribosome

Site of protein synthesis in a cell; composed of proteins and ribosomal RNA (rRNA).

Translation

During gene expression, the process whereby ribosomes use the sequence of codons in mRNA to produce a polypeptide with a particular sequence of amino acids.

Transcription

First stage of gene expression; process whereby a DNA strand serves as a template for the formation of mRNA.