The diagram below shows cell A completing a life process. Cell A performs functions similar to the tissues and systems in complex, multicellular organisms. Thus process is called A. Diffusion
B. Facilitated diffusion
C. Exocytosis
D. Endocytosis

the endocrine system secretes hormones into blood and other body fluids. these chemicals are important for metabolism, growth, water and mineral balance, and the response to stress. hormones provide feedback to the brain to affect neural processing. reproductive hormones affect the development of the nervous system.