Many pathogenic bacteria species are becoming resistant to antibiotics. explain how such adaptions can develop through the process of natural selection ?

Aplant may open end close its stomata to prevent excess water loss and maintain

What controls activities within a eukaryotic cell?

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.