The chromosomes are threadlike bodies present in the cell’s nuclei, and they represent the genetic material of the living organisms, They are not visible in the cell’s nucleus not even under a microscope, When...
unicellular organisms The unicellular organism is an integrated living organism that proves that the cell is the unit of structure and function because it has the ability to do all its biological functions.
The plant tissue (as the epidermis tissue of the onion leaf) is composed of small units known as the plant cells, where each cell contains many components, The plant cell is the eukaryotic cell...
The systems are composed of the organs, the organs are composed of tissues, and the tissues are composed of the cells, The cell is the building unit of the living organism’s body, and it...
