Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is called metabolism.Metabolism includes both exothermic (energy-releasing) chemical reactions and endothermic (energy-absorbing) chemical reactions.
Answer:
<em>Respiration and photosynthesis. </em>
Explanation:
<em>Respiration provides the cell with oxygen while photosynthesis provides it with carbon dioxide. Both functions release what is needed for the other. Therefore, these functions interact.</em>
