What's the cell wall of a onion made up of?

Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape.

cell membrane,cytoplasm,nucleus and a large Vacuole.

Explanation:

An onion is a multicellular(consisting of many cells)plant organism.As in all plant cells,the cell of an onion peel consists of a cell wall.

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

a. the production of carbon dioxide through the process of photosynthesis