November 30, 2015

Homework Help: Science

Posted by blah on Tuesday, January 29, 2008 at 9:45pm.

Alright i forgot my science book and theres a paper due soon so i was wondering if i could get some answers to these questions.

List Three Ways That Substances can move in and out of a cell.

In diffusion, molecules move from an area of _________ concentration to an area of _________ concentration.

Two ways of moving things into and out of cells that do NOT need energy are ______________ AND ____________ .

How does active transport differ from passive transport?

List Two ways the cell moves things by active transport.

Plz help!! Thanks

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