Learn about the structure of a chloroplast here, with the explanations and printable examples of the diagrams of a chloroplast. A chloroplast is a type of organelle known as a plastid, characterized by its two membranes and a high concentration of chlorophyll. Other plastid types, such as the leucoplast and the chromoplast, contain little chlorophyll and do not carry out photosynthesis. Study the structure of chloroplast in the diagrams below.
You can see in the diagram of chloroplast below that chloroplasts are the food producers of the cell. Animal cells do not have chloroplasts. Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast. Learn more about this process in the example diagrams below.
Two membranes contain and protect the inner parts of the chloroplast. They are the outer and inner membranes. The inner membrane surrounds the stroma and the grana. One thylakoid stack is called a granum. Chlorophyll molecules sit on the surface of each thylakoid and capture light energy from the Sun. The stacks of thylakoid sacs are connected by stroma lamellae. The lamellae act like the skeleton of the chloroplast, keeping all of the sacs a safe distance from each other and maximizing the efficiency of the organelle.
If all of the thylakoids were overlapping and bunched together, there would not be an efficient way to capture the Sun’s energy. By studying these diagrams, you would know how plants produce their own food. You can also learn much more about plants through our biology diagram category that you can find on our side of the site!