The cell envelope is the cell membrane and cell wall plus an outer membrane, if one is present.
Most bacterial cell envelopes fall into two major categories: Gram positive and Gram negative. These are differentiated by their Gram staining characteristics.
Read more about Cell Envelope: Function
Famous quotes containing the words cell and/or envelope:
“In America all too few blows are struck into flesh. We kill the spirit here, we are experts at that. We use psychic bullets and kill each other cell by cell.”
—Norman Mailer (b. 1923)
“Life is not a series of gig lamps symmetrically arranged; life is a luminous halo, a semi-transparent envelope surrounding us from the beginning of consciousness to the end.”
—Virginia Woolf (1882–1941)