Each of these four organisms began life as a single 2n cell. cells in each organisms divided and differentiated. probably the single most important process that ensured genetic continuity in all four organisms was dna a) alliteration. b) replication. c) transcription. d) translation.

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist