The plant has various methods and systems for support to maintain its shape and for its protection, These methods may be physiological or structural, The physiological support is temporary support, because it depends on...
A heterotrophic organism (consumer) obtains its food in the form of ready organism materials which are large and complex molecules, These molecules can not diffuse through the cell membrane of a living organism, So,...
The cell is the building and functional unit of the living organism , Living organisms may be unicellular or multicellular , Although the similarity of all living organisms in their building and functional unit...
Scientists discovered that Genetic information which lead to the appearance of traits in all living organisms are carried on the chromosomes & Chromosomes are found inside the nucleus of each cell in all living...
