Blood tests, unlike urinalysis, detect the presence illicit drugs, not inactive drug metabolites. In general, THC only remains detectable in the blood of cannabis consumers for a few hours (though low, residual levels may be detected in chronic smokers for up to 12-24+ hours if more sensitive technology is used).
Transcription & Translation: Transcription (Basic). Transcription is the process by which the information in DNA is copied into messenger RNA (mRNA) for protein production. Transcription begins with a bundle of factors assembling at the promoter sequence on the DNA (in red). Here, two transcription factors are already bound to the promoter.
Transcription In general, transcription is the process of synthesizing a sequence of mRNA from a complementary template strand of DNA which is read from the 3' â 5' direction but synthesized in the 5' â 3'. It takes place in the nucleus of the cell in eukaryotes and the cytoplasm or nucleoid (if present) in prokaryotes.