Question

which of the following is not a characteristic of neurons?
they are mitotic.
they conduct impulses.
they have extreme longevity.
they have an exceptionally high metabolic rate.

Explanation:

Neurons are non - mitotic cells in general (they do not divide by mitosis in the mature nervous system). Neurons conduct electrical impulses, have extreme longevity (they can live as long as the organism), and have a high metabolic rate as they need energy to maintain ion gradients for impulse conduction. So the option "They are mitotic" is not a characteristic of neurons.

Answer:

A. They are mitotic.