A research team followed the path of oxygen atoms on carbon dioxide molecules during photosynthesis to create a new way of measuring the efficiency of the world’s plant life. The authors of the study said the new estimate of the rate of global photosynthesis enabled by their method will in turn help guide other estimates of plant activity such as the capacity of forests and crops to grow.
Quoted from Measuring global photosynthesis rate: Earth’s plant life ‘recycles’ carbon dioxide faster than previously estimated on ScienceDaily: Top News
This practical offers a fun way of measuring the rate of photosynthesis, using a green alga immobilised in alginate beads. The beads are placed in a Hydrogencarbonate indicator, which changes colour with pH. They could actually help offset some of our human carbon emissions by removing more carbon dioxide from the air. Kia ora koutou. Wele to the home of the teaching and learning guides for senior secondary subjects. These guides have been gned to help teachers create quality teaching and learning programmes. Tags: home, senior, secondary, 2.5. 4: Transfers and Transformations The biogeochemical cycles. Movement of nutrients and energy through the ecosystem is quite different. Energy travels from the sun, through food webs and is eventual lost to space as heat. Organisms that use inorganic sources of energy, and particularly s are the base unit of stored energy in any ecosystem. Light energy is converted to chemical energy by within the cells of s