Osmosis, the movement of a solvent (usually water) across a semi-permeable membrane from an area of higher solvent concentration to an area of lower solvent concentration, is key in the maintenance of homeostasis. This demo shows osmosis across a semi-permeable membrane.
Related Resources:
Teacher Demo/Student Activity: Disappearing Beaker
Categories: Lab/Student Activity, Teacher Demonstration
This demonstration will amaze and astound! As you pour vegetable oil into a small Pyrex beaker placed inside a larger Pyrex beaker, the smaller beaker will magically disappear! It could be a teacher... read more
Teacher Demo: Denaturing Proteins
Categories: Teacher Demonstration
Proteins have specific uses inside cells to support biochemical reactions important for cell structures and metabolic processes. Cells maintain a balanced internal environment that allows these... read more
Teacher Demo/Student Activity: Transpiration
Categories: Lab/Student Activity, Teacher Demonstration
Xylem and phloem tissues make up the "circulatory" system of a plant. The xylem tissues transport water from the roots to all of the other living tissues, while the phloem tissues transport sugars... read more