Many cells.
It is made of trillions of cells just a you and me.
The species inside the animal kingdom are example organisms that do not have cell walls. This includes reptiles, birds and mammals.
The cell wall is located just outside the cell membrane of plant cells. The cell wall is made of a substance called cellulose and is not found in animal cells.
Cells come from other cells. However they are not made of cells. They are made of organelles and cytoplasm.
a plant leaf does not have just one cell. it has multiple cells, that is what plants are made of.
Mammals including human are made up of very small cells called mammalian cells .These differ from plant cells by not having cell wall These are bounded by only plasma membrane so sensitive to osmotic lysis. Detailed structure of mammalian cell can be studied in detail
cells
They are any cells forming the body of an organism, as opposed to germline cells. In mammals, germline cells (also known as "gametes") are the spermatozoa and ova which fuse during fertilization to produce a cell called a zygote, from which the entire mammalian embryo develops. Every other cell type in the mammalian body-apart from the sperm and ova, the cells from which they are made (gametocytes) and undifferentiated stem cells-is a somatic cell: internal organs, skin, bones, blood, and connective tissue are all made up of somatic cells.
Cancer isn't really a specific cell it is just the inability for some cells to stop reproducing.
The cell membrane is a part of a cell; specifically, it is the outermost layer, or effectively the skin of the cell. It is not made up of cells. A cell is not itself made up of cells, that would entail an infinite regression.
A tree is made of cells that have cell walls.
A virus is not made from cells.