The correct answer is: D. When mature, they lose ability to divide.
Neurons are the basic units of the nervous system. They are specialized cells that transmit information throughout the body. Neurons have three main parts: the cell body, the dendrites, and the axon. The cell body contains the nucleus and other organelles that are necessary for cell function. The dendrites are short, branched projections that receive information from other neurons. The axon is a long, slender projection that carries information away from the cell body.
Neurons are separated from one another by synapses. Synapses are the junctions between neurons where information is transmitted. The information is transmitted in the form of chemical signals called neurotransmitters.
Neurons are very specialized cells that are able to conduct electrical signals. These electrical signals are what allow neurons to communicate with one another. Neurons are also able to divide, which allows them to grow and repair themselves.
However, once a neuron has matured, it loses the ability to divide. This is because neurons have a very specific structure that is necessary for their function. If a neuron were to divide, it would lose this structure and would no longer be able to function properly.
Therefore, the correct answer is: D. When mature, they lose ability to divide.