A typical chloroplast


The organelle shown at left is a typical chloroplast. These organelles are encased in their own membrane system, which effectively compartmentalize (separate)  the biochemical reactions taking place within the chloroplast itself, from those taking place in the cytoplasm of the cell.

Chloroplasts contain photosynthetic pigments including chlorophylls, that are responsible for the process which  we call photosynthesis. The network of membranes within the chloroplast are termed grana and stroma lamellae - grana stacks contain the pigment systems and other complex structures, that are involved in the light-harvesting phase of  photosynthesis. The stroma is involved in trapping carbon dioxide and its incorporation into more complex organic molecules, such as sugars, which are made available for most of the growth and other related processes that take place in a typical plant cell.

Question: Is the chloroplast illustrated here capable of sustaining C3 or C4 photosynthesis? Try to think of several (at least 4-5) reasons that support your answer

Click here for some more information on the light reactions of  photosynthesis