1. Cells are limited by the resources available to them. 2. The cell has to efficiently transport nutrients into it. 3. Because cells try to maintain a certain size, at some point they can no longer grow larger and they make the decision to divide. [For single-celled organisms like bacteria, algae, or yeast, this decision is mainly based on the availability of food.] 4. For cells that are part of a multicellular organism (like you are!) the decision to divide is more complex. There usually isn't a shortage of nutrients, but there may be a shortage of space. [For multicellular organisms, it would be bad if cells divided uncontrollably. In fact, uncontrolled cell division is what cancer is.] 5. They must receive signals from cells around them to divide and check if the DNA is damaged.
The cell membrane is the answer! Thanks for asking!
The surface area-to-volume ratio of the cell.
The surface area-to-volume ratio of the cell.
the need for surface area
surface tension of plasma membrane
cell size is limiteb by the ratio of the suface area to volume as the cell becomes longer this rate decreases at some size a cells suface area will become too small for materials to enter the cell quickly enough to meet the cells need
Lack of active transport. Diffusion rates sets size limits.
A cell with a surface area that limits its size is called a small cell or a cell with a high surface area-to-volume ratio. This ratio influences the efficiency of nutrient absorption and waste elimination in the cell.
Boss
It's called the square-cube law. If an object (such as a cell) increases in size [say doubles] then its volume (or mass) goes up by the cube of the size, but its surface area increases only by the square of its size. Thus a doubling will produce a 4 fold increase in surface but an 8 fold increase in mass. Since cells depend on diffusion of molecules through its surface, it can outgrow its ability to acquire new materials (or to get ride of waste. This rule also limits the size of insects (actually all animals).
cell size is limiteb by the ratio of the suface area to volume as the cell becomes longer this rate decreases at some size a cells suface area will become too small for materials to enter the cell quickly enough to meet the cells need
Prey size and availability.