A short stretch of RNA with a free 3' end, bound by complementary base pairing to the template strand, that is elongated with DNA nucleotides during DNA replication.
Two general types of cells are found in the nervous system: neurons and neuroglia. A. Neurons 1. Consist of three main partsâdendrites (conduct impulses to cell body of neuron); cell body of neuron; and axon (conducts impulses away from cell body of neuron) 2.he nervous system transmits information rapidly by means of nerve impulses conducted from one body area to another. The nervous system is made up of the brain and spinal cord, and the many nerves of the body.
A typical neuron has a nucleated soma and processes (axon and dendrites). Neurons may be classified according to polarity: bipolar neuron â a neuron in which the processes extend from opposite ends of the soma (pseudo)unipolar neuron â a neuron in which the process extends from one end of the soma; multipolar neuron â a neuron in which an axon and several dendrites extend from the soma; Neurons according to the direction of nerve impulses: