Question

Cells are small in size because:

• A. Small size of cells provides a large surface area to volume ratio and makes it efficient
• B. Cell is made up of atoms and molecules and since they are small in size, cell also need to be small
• C. There are not enough big proteins to make the cell large
• D. None of the above

Answer 1

The correct option is A

Small size of cells provides a large surface area to volume ratio and makes it efficient

Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allows 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.