A cell lysis solution is used to disrupt cellular membranes. This resource provides a detailed explanation of how to make a cell lysis solution and describes the different ingredients, their functions, and the choices available, all...

Learn about the solvent properties of water, pH, pKa and buffering capacity with a series of problems. The correct answers for the multiple choices problems are reinforced with a brief explanation and the incorrect answers are linked to...

Did you know that the #1 pollutant in North Carolina is dirt? When soil is washed into streams and river, it smothers small animals and fish by clogging their gills. Look for bare patches of ground around your home and around your school...

At the end of this tutorial, the learner will understand the concept of intractable conflict. It is 3 of 4 in the series titled "Intractable Conflict."

A map of Colonial Georgia, showing the proclamation line of the original United States established at the end of the American Revolutionary War in 1763, the boundary when Georgia was established from the Carolinas as a buffer between the...

A map of the coastal Carolinas, and part of the newly formed Georgia Colony, or Province of Georgia, in 1732. The map shows the earlier settlements of the Albemarle Sound (1653), Port Royal (1670), Charleston (1680), and the settlement...

A map of the Appalachian Mountain region showing the three primary routes of the early 1700's through the natural barrier from the English colonies to the Mississippi Valley. "The Appalachian ranges separated the French and the English,...

About the Key Indicators Database: Pew Research Center conducts public opinion surveys around the world on a broad array of subjects ranging from people's assessments of their own lives to their views about the current state of the world...