The tension of the 236 strings in a grand piano exert a combined force of 20 tons on the cast iron frame. The presentation includes topics such as work, forms of energy, conservation of energy, gravitational and elastic potential energy,...

The metaphors used here to describe the "cut and paste" procedures for genetic engineering will really help your biologists in their understanding of restriction enzymes and DNA.  The uses of genes that are isolated and incorporated...

The concepts here cover the gamut of biotechnological engineering. Information is given about plasmids and genetic manipulation. After reviewing genetic engineering, this slide show would be useful to recap some of the main procedures.