Chapter 8: Photosynthesis

3. Big stacks of thylakoids are called grana. 4. Thylakoids contain chlorophyll. 5. Surrounding the thylakoids is a dense solution called the stroma. C. The Thylakoids. 1. Thylakoid: the structural unit of photosynthesis. 2. The thylakoids take the form of flattened sacs or vesicles. 3. Chlorophyll molecules are built into the thylakoid membrane. ................
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