Question

Why are the cells generally a small size

Answer 1

Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allow more molecules and ions move across the cell membrane per unit of cytoplasmic volume. Cellsare so small because they need to be able to get the nutrients in and the waste out quickly.

Answer 2

okay its easy for me,...
Cells are so little, so they can maximize their ratio of surface area to volume.Smaller cells have a higher ratio which allow more molecules and ions move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.