Yeast (IMAGE) Aarhus University Caption Yeast is one of the microorganisms helping to convert CO2 into edible proteins. On this photo yeast cells have been captured by an electron microscope. Credit Photo: Mogana Das Murtey and Patchamuthu Ramasamy (Wikimedia Commons) Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.