PROF. KENNETH R. MILLER / SCIENCE PHOTO LIBRARY PROF. KENNETH R. MILLER / SCIENCE PHOTO LIBRARY
Chloroplast membrane. Coloured freeze-fracture transmission electron micrograph (TEM) of the in- side of a chloroplast's thylakoid membrane. The membrane is part of a granum, a stack of similar membranes that contain the green pigment chlorophyll. Each chloroplast contains around 50 grana. A chloroplast is a plant cell structure that is responsible for making food for the plant by photosynthesis. This is the conversion of light and carbon dioxide into sugar, water and oxygen. Magnification unknown.
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