We present some results of the study of biogenic atmospheric aerosols accumulated in the snow cover near Novosibirsk in 2001. It was found that the total protein concentration in snow decreased as the distance from the sources of both organic and inorganic aerosols increased. Such dependence was not found for living microorganisms in the snow. The data on microorganism content in snow are presented as well. Possible ways of deposition of aerosol particles containing protein and microorganisms onto the snow cover are discussed.