âThe toll-free 122 line is an express dial emergency number to get the FRSC National Operations Control Centre, Abuja for compliant on any development or issues on the road. âYou can dial and report any accident involving vehicles or other objects on the road.
Surface area is the amount of cell membrane available for diffusion. So for a cell, surface area actually represents how much diffusion that can happen at one time. Whereas volume is the amount of cytoplasm contained within the cell membrane.So for a cell, volume is how long It takes to get from the membrane to the center of the cell by diffusion. Therefore, to perform diffusion efficiently, there must be an adequate ratio between the cellâs surface area and its volume.o for a cell, surface area actually represents how much diffusion that can happen at one time. Whereas volume is the amount of cytoplasm contained within the cell membrane. So for a cell, volume is how long It takes to get from the membrane to the center of the cell by diffusion.
of cytoplasm contained within the cell membrane. from the membrane to the center of the cell by diffusion. there must be an adequate ratio between the cellâs surface area and its volume. simplest model of cell shape) gets larger, its volume increases at a different rate than its surface area. In this lab, we will investigate this relationship and how it affects diffusion time. The prime limitation to cell size is the limitation imposed by diffusion. Diffusion is a very slow process. If a cell were 20 cm (~8 inches), it would take days for nutrients to reach its center or for wastes to reach the cell membrane. The cell would quickly starve to death or poison itself with its own wastes. So whatâs the solution, if a cell approaches its maximum size? Itâs time to divide! If cells receive the proper signals, they will divide by mitosis before they become too big. PART 1 In this lab activity, you will use agar cubes as cell models.