Convection of Gases Apparatus, consists of a metal box (22x10x11cm) with clear acrylic front panel, two glass chimneys, a candle and a cotton filled wick as the smoke source, Includes activity guide
DNA Model, built to a scale of 10cm to 1nm and accurately depicts a 16 base pair section of DNA, phosphatedeoxyribose backbone and the four bases are represented by custom plastic moldings that show the shapes of the molecules in scale, Dimensions: 25in x 9in x 9in
Easy to construct the three dimensional model of DNA. Emphasizing the base pair sequence and function of DNA, the sturdy, colorful bases snap together in the correct sequence, and the pairs attach to a center rod representing hydrogen bonds.
Deluxe Functional Knee Joint, This high-quality deluxe functional knee joint model with ligaments shows the anatomy and possible physiological movements of the human knee joint. This model clearly demonstrates abductions, anteversion, retroversion
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