Which of the following is NOT true of graded potentials? (A) their size varies with the strength of the stimulus.
(B) one graded potential can add to another graded potential during
summation
(C) they can be a depolarization or hyper-polarization,
(D) the graded potential can propagate over long distances.

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

Select the word from the list that best fits the definition a system made of 25 satellites

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.