Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.transport proteins; againstenergy and transport proteins; againstenergy; downtransport proteins; down

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.

The movement of a substance across a cell membrane against its concentration or electrochemical gradient.Group of answer choicesfacilitated diffusionactive transportosmosispassive transportdiffusion

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.

The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called:Question 17Select one:a.osmosis.b.facilitated diffusion.c.active transport.d.endocytosis.e.exocytosis.

Simple diffusion and facilitated diffusion share which of the following characteristicsSelect one:a. Transport solute against concentration gradientb. Do not require adenosine triphosphate (ATP)c. Require transport proteind. Saturation kineticse. Can be blocked by specific inhibitorsClear my choice