These two animations illustrate how p53 binds to DNA to regulate transcription, leading to apoptosis of cells and inhibition of cancer cell growth. Several structural regions of p53 contribute to the anti-tumor function. Why is loop 2 important for p53 function

On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?