Transport Across a Cell Membrane. The cell membrane is one of the great multi-taskers of biology. It provides structure for the cell, protects cytosolic contents from the environment, and allows cells to act as specialized units.
How to Amend the Constitution. Article V of the United States Constitution provides authority and instructions for amending the Constitution. Amendments can be proposed by Congress or by constitutional convention. Congress then decides how to ratify the amendment if approved by Congress or convention.
Though there are 27 amendments to the Constitution of the USA, only 26 of them are in function. The point is that the 21st amendment annulled the 18th one. The procedure of amending is described in Article V of the U.S. Constitution. The procedure consists of two different parts.