Simple diffusionMultiple Choicerequires energy.utilizes proteins to move molecules across a membrane.moves molecules against a concentration gradient.cannot occur without a membrane present.does not require energy.

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 choicesosmosisactive transportfacilitated diffusiondiffusionpassive 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.

What type of membrane transport requires energy (ATP) and transport proteins?Multiple choice question.osmosissimple diffusionfacilitated diffusionactive transport

There are two kinds of diffusion: simple diffusion and facilitated diffusion. Both of these types of diffusion share the following properties: Question 4Select one:a.all of the above are shared propertiesb.solutes transported are not very large proteins c.solutes move down their concentration gradients d.the process is described as "passive"e.no energy is required