Question

As the size of the cell increases

• A. The total surface area decreases at the same rate as the volume
• B. The volume increases at the same rate as the total surface area
• C. The total surface area increase faster than the volume
• D. The volume increases faster than the total surface area

Answer 1

Answer: (C)

As the cell becomes larger, the activity of DNA is increased since large number of activities take place in the same cell. The cell membrane increases its size because as the cell enlarges, more and more ions and gases and other molecules are exchanged between the cells and external environment. Therefore, the cells surface area has to increase faster than the volume of the cell or else the cell membrane could rupture.

Thus, the correct answer is 'The total surface area increase faster than the volume.'