Im pretty sure that it is the letter ::::A ..
hope this helped xoxo
Answer:
the 3rd. please follow Me......
During active transport, the sodium pumps would transfer the solutions opposite the concentration gradient. This means that it would go from Solution A to Solution B
Answer:
so surface area is the limit
Explanation:
As a cell grows, its volume increases at a faster rate than its surface area. Therefore, the volume of a cell is limited by its surface area, which is directly related to its ability to permeate required materials through its membrane. Surface area limits the diffusion of nutrients into the cell.