The movement of a substance across a cell membrane against its concentration or electrochemical gradient.Group of answer choicesactive transportfacilitated diffusionpassive transportdiffusionosmosis

Movement of substances across the cell membrane occurs throughDiffusionOsmosisBulk transport All of the above

Which of the following processes includes all others?Group of answer choicesfacilitated diffusiondiffusion of a solute across a membranepassive transporttransport of an ion down its electrochemical gradientosmosis

The movement of substances from lower to higher concentration across a semi-permeable membrane that must have a specific protein carrier and use energy is called: A. facilitated diffusion. B. diffusion. C. active transport. D. osmosis. E. endocytosis.

Which process could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings?facilitated diffusiondiffusionosmosisactive transport

A process that requires cellular energy to move a substance against its concentration gradient is called:Question 16Select one:a.active transport.b.passive transportc.facilitated transport.d.osmosis.e.diffusion.