GERD GUENTHER / SCIENCE PHOTO LIBRARY GERD GUENTHER / SCIENCE PHOTO LIBRARY
Euglena algae. Light microscope differential interference contrast (DIC) footage of Euglena sp. algae, with some moving (elongated) and others at the start of their resting stage (round). The algae contain Paramylon grains (a starch-like carbohydrate) as well as a characteristic red eyespot. Euglena is photosynthetic, using the energy of sunlight to synthesise food. The eyespot is sensitive to light, allowing it to move towards sunlight. Magnification: x590 at 10 centimetres across.
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