150 words. 6 HOURS NO EXCEPTIONS

Chapter 3 discussed cell structure and functions, and Chapter 4 discussed the organization and function of the human body. When viewed together, this implies the functions of the human body are dependent upon cellular activity. Explain why this would be correct. An important cellular structure is the cell (plasma) membrane. Identify and explain a specific function of the cell membrane that you feel is the most important in achieving homeostasis.