Question

Q17) a) what is a cell? Why is a cell called the structural and functional unit of life? b) Why is the plasma membrane called a selectively permeable membrane?​

Answer 1

Answer:

basic building blocks of all living thing called cell.

Answer 2

The cell is known as the structural and functional unit of life because all living beings are formed of cells. Cells are very important for performing various life processes which are required for sustaining life on earth.cells give form and structure, process nutrients.