the movement of molecules across a membrane, from an area of lower concentration to an area of higher concentration, which requires energy from respiration
is active transport an active or passive process?
active, as it requires energy
where does active transport take place?
active transport can only take place across a membrane
where do plants absorb mineral ions from?
the soil
why can't plants absorb mineral ions via diffusion?
the plant's concentration is higher in the cell than in the soil
