Question

what is the cell addition and define it properly

Answer 1

If you need to sum a column or row of numbers, let Excel do the math for you. Select a cell next to the numbers you want to sum, click AutoSum on the Home tab, press Enter, and you're done. When you click AutoSum, Excel automatically enters a formula (that uses the SUM function) to sum the numbers.

Answer 2

Answer:

Cell, in biology, the basic membrane-bound unit that ... sorting, and directing them to their proper locations.