text: Chlorophyl alone would not suffice. You should get the whole bunch of genes needed to build the photosynthetic machinery. And before you think that sticking chloroplasts inside animal cells will do, think again. Chloroplasts are the product of many hundreds of millions of years of evolution. Most of their genetic info (their genes) have migrated to the cell nuclei. So, you dhould get not only the chloroplasts, but also the rest of the genes that moved out of them. A pretty difficult task to current science. \n\nAlthough, nature has an interesting example of such a mixture: a particular kind of slug (I don´t remember the species) can actually eat green algae, seize their chloroplasts and accumulate them right below their skin. Eventually, this chloroplasts die (mostly due to the lack of essential genes to keep them alive for long periods) but in the meantime, the slug can actually live on photosynthesis. Maybe you can find something on the www.