Which of the following best describes what causes water molecules to exhibit properties such as cohesive and adhesive behavior?

water molecules are polar, having partially positive and partially negative ends.
water molecules have both a hydrophobic end and a hydrophilic end.
water molecules are capable of dissolving both polar and nonpolar substances.
water molecules have a high molecular weight, making them very dense.

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.