by STAO ADMIN | Nov 13, 2019
This demonstration shows that the combination of yeast, sugar and water will produce a gas that can be collected. This provides students with an opportunity to draw on prior knowledge to identify the cellular process involved. Students also have a chance to predict...
by STAO ADMIN | Nov 13, 2019
Osmosis is the process by which the concentrations of two solutions, separated by a selectively permeable membrane, equalize by the movement of a solvent such as water. This demonstration shows that the ability of plant cells to absorb water is decreased by heating....
by STAO ADMIN | Nov 13, 2019
This demonstration shows how water can affect the growth of bread mould.
by STAO ADMIN | Nov 13, 2019
This demonstration uses food and a series of containers and additives to model the process of mechanical and chemical digestion in the human (mammalian) digestive system. The demonstration begins with actual food items and ends with a paste closely resembling fecal...
by STAO ADMIN | Nov 13, 2019
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 proteins to retain the structure important to whatever action it performs....
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