Autotroph: Organisms that use light energy and inorganic molecules to synthesise complex organic molecules
Heterotroph: Organisms that ingest and digest complex organic molecules, releasing their chemical potential energy stored in them
Light energy is used during photosynthesis to produce complex organic molecules
Organisms release the energy stored in complex organic molecules - respiration. Respiration requires O2, which was first released for plants during photosynthesis. Oce the atmosphere contained oxygen, organisms could use it for aerobic respiration
Photosynthesis is a 2-staged process that takes place in chloroplasts
Comments
No comments have yet been made