How does photosynthesis in some bacteria differ from photosynthesis in plants?

1. Plants and photosynthetic protists both hold their chlorophyll inside chloroplasts. 2. A chloroplast is a membrane-bound organelle, and prokaryotes have no membrane-bound organelles. 3. Some bacteria nevertheless perform photosynthesis. 4. Their chlorophyll is not relegated to an organelle, so the pigment sits free in the cell. 5. The pigment itself is still chlorophyll, so the answer claiming a different pigment is wrong. 6. The nucleoid holds DNA rather than photosynthetic machinery, so that answer misplaces the reactions. 7. The difference is that bacterial chlorophyll sits outside any organelle. _Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.3 Eukaryotic Cells_