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.
the amendment process. An amendment to the Constitution may be proposed if 2/3 of the members of Congress or 2/3 of state legislatures vote for it. The amendment may then be added to the Constitution by a 3/4 vote of state legislatures, or special state conventions elected for that purpose.