Each of those enzymes can then catalyze many chemicalreactions (7). Starting with 10 10 M of signaling molecule, one cell surface receptor can trigger the production of 10 6 M of one of theproducts, an amplification of four orders of magnitude.
EU, and made its goals and limitations easier to understand. The Lisbon Treaty confirmed the power of the EU to act in areas such as human rights, judicial and foreign policy, and. re-emphasised the idea that every citizen of a member state is also an EU citizen. It also strengthened the EUâs.
The Maastricht Treaty established the European Union under its current name in 1993 and introduced European citizenship. The latest major amendment to the constitutional basis of the EU, the Treaty of Lisbon, came into force in 2009.