In molecular biology, a<unk> is any vehicle used to transfer foreign genetic material into another cell.
The<unk> itself is generally a DNA sequence that consists of an insert (transgene) and a larger sequence that serves of the "backbone" of the<unk>  The purpose of a<unk> to transfer genetic information to another cell is typically to isolate, multiply, or express the insert in the target cell.<unk>  called expression<unk>  (expression constructs) specifically are for the expression of the transgene in the target cell, and generally have a promoter sequence that drives expression of the transgene. Simpler<unk>  called transcription<unk>  are only capable of being transcribed but not translated: they can be replicated in a target cell but not expressed, unlike expression<unk> . Transcription<unk>  are used to amplify their insert.
Insertion of a<unk> into the target cell is generally called transfection, although insertion of a viral<unk> is often called transduction.
Vector 
Viral vector
Capsid
Nucleosol
Food chain
Microorganism
Electron
Xenobiotic