Which statement best explains why cells in organisms such as animals reproduce?

Cell division helps animals repair old cells.

Cell division produces glucose which is used as food.

Reproduction breaks down glucose into useful energy.

Reproduction releases energy necessary for animals to survive.

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.