The size to mass ratio
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).
Neurons have greatly increased surface area due to their dendrites and axons. Intestinal cells have greatly increased surface area due to microvilli on the surface of the cells that help in absorption of nutrients.
27 smaller cells would have a greater surface area than one large cell. This is because the total surface area of the smaller cells would be greater due to the additional surface area of the cell membranes around each individual cell.
Yes, parietal cells (like all cells) have a cell membrane. Parietal cells have a huge surface area (their membrane has deep folds called canaliculi).
The short extensions of the cell wall are called microvilli. They are found on the surface of some cells and serve to increase surface area for absorption and secretion of substances.
The surface area-to-volume ratio of the cell.
The surface area-to-volume ratio of the cell.
the need for surface area
The surface area-to-volume ratio of the cell.
The major cause of size limits for cells is the surface area to volume ratio. As a cell grows, its volume increases faster than its surface area, leading to difficulty in exchanging nutrients and wastes efficiently. This can compromise the cell's functions and survival.
Boss
The folds of the plasma membrane that increase the cell's surface area are called microvilli. They are small, finger-like projections found on the surface of certain types of cells, particularly in cells involved in absorption, to increase the surface area for better nutrient absorption.
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).
surface area/ volume. wider range of surface area to volume is better for cells.
It is simply called its surface area.
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
Neurons have greatly increased surface area due to their dendrites and axons. Intestinal cells have greatly increased surface area due to microvilli on the surface of the cells that help in absorption of nutrients.