Photosynthesis Earth's atmosphere, and supplies all of the organic compounds and most of the energy necessary for life on Earth. Although photosynthesis is performed differently by different species, the process always begins when energy from light is absorbed by proteins called reaction centres that contain green chlorophyll pigments. In plants, these proteins are held inside organelles called chloroplasts, which are most abundant in leaf cells, while in bacteria they are embedded in the plasma membrane. In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas. The hydrogen freed by the splitting
Australian Stem Cell Centre Australian Stem Cell Centre The Australian Stem Cell Centre is an Australian medical research and development centre which focuses on regenerative medicine through the use of stem cells. Founded in 2003, the Centre is the National Biotechnology Centre of Excellence and has received over $100 million in funding in recent years. It is Australia's premier stem cell research organisation. In June 2008, the Centre announced that it had begun working on induced pluripotent (iPS) cells (human embryonic stem cells, artificially created without human eggs or embryos). This was the first time in Australia that such research had been carried out,