Parts of a plant cell: label the diagram

A typical plant cell cut open: boxy, walled, and mostly vacuole. The drawing is Ribbia's own, and it shows only parts that can be told apart by shape and position, so every answer is fair.

• Cell wall. The rigid outer layer, mostly cellulose, that protects the cell and gives it its shape.
• Cell membrane. The thin boundary just inside the wall: a double layer of phospholipids that controls what passes in and out.
• Cytoplasm. Everything between the membrane and the nucleus: the organelles and the gel they sit in.
• Central vacuole. The large sac that takes up most of the cell: it regulates water and keeps the cell firm.
• Nucleus. Houses the cell's DNA and directs the making of ribosomes and proteins.
• Nucleolus. The dense spot inside the nucleus where ribosome subunits are put together.
• Rough endoplasmic reticulum. Folded membranes studded with ribosomes, where proteins are made and modified.
• Smooth endoplasmic reticulum. Tubes with no ribosomes: makes lipids and steroid hormones, detoxifies and stores calcium.
• Golgi apparatus. A stack of flattened sacs that sorts, tags, packages and sends out lipids and proteins.
• Chloroplast. Where photosynthesis happens, in stacks of thylakoids holding green chlorophyll.
• Mitochondrion. Makes ATP, the cell's energy currency, by cellular respiration. The inner membrane is folded.
• Ribosomes. The small dots, free in the cytoplasm: they build proteins.