Determine about the Chloroplast
One of the most distinguishing features of all eukaryotic plant cells is that in addition to mitochondria, they contain special light harvesting organelles known as the chloroplasts. These are the largest organelles in a plant cell, and are about l0µm long, 2-3 pm thick.
About 50% of the dry weight of the chloroplasts is protein, and the rest is mostly lipids. The lipid material of the chloroplasts consists of chlorophylls, carotenoids and phospholipids. Chloroplasts, like mitochondria, possess a bilayer membrane.