the concentration of sodium on the inside of the cell is 20 mm. the outside of the cell has a sodium…
the concentration of sodium on the inside of the cell is 20 mm. the outside of the cell has a sodium concentration of 115 mm. which mechanism of ion uptake would best move sodium from the inside of the cell to the outside?\nosmosis\ndiffusion\npassive transport\nactive transport
Answer
Brief Explanations:
Osmosis is the movement of water, not ions. Diffusion and passive transport move substances from high - to low - concentration areas. Here, moving sodium from 20 mM (inside the cell) to 115 mM (outside the cell) is against the concentration gradient. Active transport is required to move substances against their concentration gradient.
Answer:
D. active transport