Because just as many similar sized building block come together to build a house or skyscraper, many cells come together to build an organism.
the cell
the cell
A neuron is a nerve cell that is the basic building block of the nervous system. Neurons are similar to other cells in the human body.
it is a cell
yan A cell is the unit of life and building block of organisms.
A cell is the basic building block of life.
cell is a building block of living organisms .
Cell
The cell.
glucose
The "cell".
glucose