For Immediate Release: WASHINGTON â Legislation dubbed the Deny Americans the Right to Know, or DARK, Act passed the House of Representatives today, but the fight for a more transparent food industry is only just beginning, EWGâs Scott Faber said following the vote.
By Regina Bailey. Definition: The nucleus is a membrane bound structure that contains the cell's hereditary information and controls the cell's growth and reproduction. It is commonly the most prominent organelle in the cell.The nucleus is surrounded by a structure called the nuclear envelope.This membrane separates the contents of the nucleus from the cytoplasm. The cell's chromosomes are also housed within the nucleus.t is commonly the most prominent organelle in the cell. The nucleus is surrounded by a structure called the nuclear envelope. This membrane separates the contents of the nucleus from the cytoplasm.
LINK / CITE ADD TO WORD LIST. noun. A model of an atom showing the nucleus. A model of an atom showing the nucleus. The nucleus is the center core of an atom that has a positive charge and that contains most of the atom's mass, or the central heart of an organization or group.1  An example of a nucleus is the center core of an atom.INK / CITE ADD TO WORD LIST. noun. A model of an atom showing the nucleus. A model of an atom showing the nucleus. The nucleus is the center core of an atom that has a positive charge and that contains most of the atom's mass, or the central heart of an organization or group.