Question

According to modern concept a cell performs

• A. All functions of living organism
• B. Only specific functions
• C. Only genetic functions
• D. No function

Answer 1

The correct option is B Only specific functions

All organisms are composed of cells. Organisms can be single-celled or multicellular.

In multicellular organisms, the shape of the cell helps determine its function. For example, red blood cells are donut-shaped to easily exchange oxygen and freely pass through narrow blood vessels while nerve cells are long so when connected to other nerve cells they can span long distances in the organism.

Modern cell theory states that all organisms are composed of one or more cells; cells are the basic units of all organisms; and cells arise only through division of a previously existing cell.

Similar cells are organised in together as tissue to perform a specific functions in the body.