Chapter 7, Problem 8RA

Which of these is not a characteristic of synaptic potentials?

$\begin{array}{l}\text{a}\text{. They are all-or-none in amplitude}\text{.}\hfill \\ \text{b}\text{. They decrease in amplitude with distance}\text{.}\hfill \\ \text{c}\text{. They are produced in dendrites and cell bodies}\text{.}\hfill \\ \begin{array}{l}\text{d}\text{. They are graded in amplitude}\text{. }\\ \text{e}\text{. They are produced by chemically regulated gates}\text{.}\end{array}\hfill \end{array}$