The cytoplasm in a single-celled organism and the circulatory system in a human both transport substances throughout the organism
Explanation:
The main building material in the body.
They are carriers of vitamins, hormones, fatty acids and other substances.
Provide the normal functioning of the immune system.
Provide the state of the "apparatus of heredity".
They are catalysts of all biochemical metabolic reactions of the body.
Sensory neurones send data to the brain.. the processes it and send back information with the help of the motor neurons.
Your answer is wall. A cell wall...
