The study of living organisms
Mitosis occurs<span> in the cell nuclei of eukaryotic cells that are not related to reproduction, while meiosis takes place in the cell nuclei of eukaryotic cells that are related to reproduction. During mitosis, a cell divides into two identical daughter cells which are used for the growth and replacement of worn cells.</span>
The nervous system sends messages from nerve endings to the brain and from the brain to cells, tissues, and organs. Cells of the nervous system sometimes secrete chemical messengers instead of neurotransmitters. These specialized nervous system cells are called neurosecretory cells, and they produce neurosecretions. Every nerve cells are long, thin cylinders along which electrical disturbances (nerve impulses) travel. the cell membrane of a typical nerve cell consists of an inner and an outer wall separated by a distance of 0.10 μm and the electric field within the cell membrane is 7.0×105n/c.
Answer:
a biologic trade of sperm/ semen and egg cells
when these are traded only then reproduction occurs
When the plant change its direction towards sunlight
