You can't have an organism without cells, since all organisms are made of cells. So I'd say they're pretty darn important.
the change of the cells and the nature
cells
It maintains a stable environment for the cell and the entire organism.
Haemoglobin is important to carry oxygen in red blood cells to different organs or tissue of organism
Some important questions to ask about cells include: What is the function of this cell? How does it interact with other cells? What organelles does it contain? How does it reproduce? What is its role in the overall function of the organism?
It is important in the very fact that cells are the building blocks to life and without new cells being constantly made then the body will die and the creation or duplication of new cells is what occurs in the cell cycle.
Cells are the basic structural and functional unit of an organism.
as a multicellular organism develops, its cells as a multicellular organism develops, its cells
No. An organism made of many cells would be a multicellular organism.
To support a living organism
All your cells are part of you, and you are an organism. Nerve cells are included.
Organism is made of cells but cell is not made of organism thts why cell and org are different.