Final answer:
Two examples of cell types that do not divide are skeletal muscle cells and neurons. Skeletal muscles function for voluntary movements and appear as long, striated, multinucleated cells, while neurons are specialized for transmitting electrical impulses and seldom regenerate.
Step-by-step explanation:
The question refers to two examples of cell types that do not divide, specifically referring to types of muscle and another cell commonly known in mature form. The correct answer is a) Skeletal; neurons. Skeletal muscle cells and neurons are both known for being non-regenerative, meaning they do not readily divide or reproduce after a certain point of maturation. Skeletal muscle cells, or myocytes, are long, tubular cells with multiple nuclei and appear striated. They are responsible for voluntary movements of the body. Meanwhile, neurons are the primary cells of the nervous system, specialized in receiving stimuli and transmitting electrical impulses, and do not typically regenerate.