You are presented with the question "what is hormones controlling cell activities important to?" and the following answer choices: 
- gravity
 - it helps plants in growing
 - the sun
 - central theme of physiology
 - female sex cells
 - density
 - Generating heat
 - production of energy

Now knowing that hormones control many cell activities, so they are very important for homeostasis and homeostasis is the central theme of physiology, choose the best answer.


 

    central theme of physiology     