Homeostasis

In the image above the woman is riding her bike in order to protect the environment, and regulate her body's homeostasis. 

Homeostasis -The steady state of the psychological condition of the body.

• Example: Maintaining the proper levels of temperature, pH, water, and other chemicals. 
• Metabolism: the totality of an organisms chemical reaction consisting of anabolic and catabolic pathways, which mange material and energy resources of the organisms.
  • Anabolism: a metabolic pathway that consumes energy to synthesize a complex molecule from simple molecules.
    

    Example: Photosynthesis

    CO2 + H2O

    light energy -----------> chlorophyll

    O2 + CH2O

  •  Catabolism : a metabolic pathway that releases energy to breaking down complex molecules to simpler molecules.
    

    Example: Respiration

    O2 + CH2O

    ---------->

    CO2 + H2O + chemical energy