Wildlife volunteering is a broad topic and there really is something for everyone. Some projects involve really getting your hands dirty in the jungle, but if this does not sound like your thing there are also plenty of other ways to get involved.
EXPERIMENT 2: Recrystallization and Melting Point. Melting Point is: â¢a constant physical property of a solid (the temperature at which it turns to a liquid) â¢reported in the lab as a melting point range (usually 1â2 ËC wide), not as a single temperature.
On mixing at ambient temperature the two strands of DNA spontaneously form a duplex (C ds) (i.e. Î± = 1) (this is true for DNA strands of any reasonable length). Each sample is heated in a UV spectrometer from 20 ÂºC to (say) 80 ÂºC at a rate of one degree per minute and the absorbance is monitored as shown in Figure 2. The melting temperature, T m, is the temperature at the maximum absorbance gradient (d A /d T) and corresponds to 50% association (Î± = Â½).