She felt her 'biological clock' ticking away and wanted to have a baby as soon as possible.
an adopted child who finally found her 'biological' mother
She practices 'biological control' in her gardening.
(..) We have it in visual range. A Borg cube on course ... We are the Borg. Lower your shields and surrender your ships. We will add your biological distinctiveness to our own. Your culture will adapt to serve us. Resistance is futile. All units, open fire. They've broken through the defence perimeter. (..)1996 Star Trek: First Contact