Explain 9.2 Maintaining A Balance

9.2 Maintaining a Balance Contextual Outline Multicellular organisms have specialized organ systems that are adapted for the uptake and transport of essential nutrients from the environment, the utilisation or production of energy and the removal of waste products arising from cellular activities. The basis of healthy body functioning in all organisms is the health of their cells. The physical and chemical factors of the environment surrounding these cells must remain within narrow limits for cells to survive. These narrow limits need to be maintained and any deviation from these limits must be quickly corrected. A breakdown in the maintenance of this balance causes problems for the organism. The
Travels through the heart and through arteries to capillaries where it diffuses into the cells and onto the mitochondrion where respiration takes place. At the same time, CO2 (waste product during respiration) diffuses into the blood and is carried to the lungs to be released as