Introduction to Membrane Transport Practice Problems

Identify which of the following is associated with osmosis.

A bacterial cell moves lactose molecules from a region of low concentration outside the cell to a region of high concentration inside the cell. Which statement below accurately describes this scenario?

An ecologist studying oceanic algae measures the diffusion rates of nitrate under varying external concentrations. The results show nitrate diffusion happens rapidly at low external concentrations but slows down as these increase. What does this imply?

Which of the following does not affect the ability of the molecule to move across a cell membrane?

In which process does a substance get chemically altered during its transfer across a bacterial cell's membrane?