If a cell grows larger, then the volume increases much more rapidly than the surface area, causing the ratio of surface area to volume to decrease. The problem is that the cell would not be able to get enough oxygen and nutrients in and get the waste products out.
The biggest problem with a large cell is that it wouldn’t be able to efficiently carry out many cell functions. As a cell begins expanding in size, the surface area to volume ratio becomes smaller and smaller, making it harder and harder to absorb and remove molecules.
For example, if we assume all cells are perfectly spherical (which they aren’t, but a lot are fairly close), then when radius doubles, the volume will increase by a factor of 8, but the surface area will only increase by a factor of 4. When the radius triples, the volume will increase by a factor of 27, but the surface area will only increase by a factor of 9.
We can see how the surface area increases at a much slower rate compared to the volume. If we increase the cell size by a large amount, the cell is unable to keep up with removing toxins/waste and absorbing vital nutrients.
In an aerobic cell, the carbon dioxide may build up faster than it can be released, or it may not be able to absorb enough nutrients fast enough.
There are some exceptions where cells can be gigantic, such as Syringammina fragilissima, which can grow up to 20 cm (8 in) in diameter per cell, but these usually have special features. For example, Syringammina fragilissima has a lot of folds and multiple nuclei to accommodate for its extreme size.
Your answer it’s B
