Yes, all cells do to protect and contain anything inside
inside the cell directly adjacent to the cell wall - in otherwords just inside of the cell wall
like most plant cells, onion cells have a membrane.
of course it does!!! all eukaryotic cells must have these 3:1. nucleus (except for a haemoglobin cell)2. cytoplasm3. cell membraneso yes!
no they have cell walls because only animal cells have cell membrains