by STAO ADMIN | Nov 13, 2019
“Our bodies are bombarded by bacteria and viruses. For those that make their way inside, our immune system is on guard, waiting not only to kill the invaders but also to create memory cells that will help defeat them more quickly the next time they try to...
by STAO ADMIN | Nov 13, 2019
This demonstration (adapted from http://www.indiana.edu/~ensiweb/lessons/origami.html where there is additional information) models the process of evolution by introducing random mutations into organisms (paper and straw birds). Birds are then selected for the...
by STAO ADMIN | Nov 13, 2019
This demonstration illustrates the importance of enzymes in the human body. Enzymes catalyze many important chemical reactions in the body. This demonstration is a visual example of how the enzyme catalase, which is present in all cells, but in highest concentrations...
by STAO ADMIN | Nov 13, 2019
These three demos allow students to experience applications of knowledge of the digestive, respiratory, and circulatory systems by doing very short activities on themselves. They also allow the opportunity to discuss the pros and cons of using humans as test subjects....
by STAO ADMIN | Nov 12, 2019
Cells require a constant supply of glucose and oxygen to produce energy. Cellular respiration occurs in the mitochondria of a cell. As a result of this process, large quantities of waste carbon dioxide must be expelled from the cell. All materials involved in this...
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