Question

scenario 3: a lab technician is conducting an experiment to observe the effects of different solutions on red blood cells. the technician prepares three slides, each with a drop of blood mixed with a different solution. the observations are as follows: the movement of water across the cell membrane, as described in the scenario, is a type of passive transport. why is this process considered passive? it requires the cell to use a protein pump it moves molecules from an area of high concentration to an area of low concentration, down a concentration gradient, without the use of cellular energy it moves molecules from an area of low concentration to an area of high concentration, up a concentration gradient, with the use of cellular energy. it requires the cell to expend energy (atp)

Explanation:

Passive transport is defined as the movement of molecules down their concentration gradient (from high to low concentration) without the expenditure of cellular energy (ATP). In the case of water movement across the cell - membrane (osmosis), it follows this pattern.

Answer:

It moves molecules from an area of high concentration to an area of low concentration, down a concentration gradient, without the use of cellular energy.