Science

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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  1. Diffusion moves molecules from greater concentration to lesser concentration.

    However, since this is not my area of expertise, I searched Google under the key words "cells active passive transport" to get these possible sources:

    (Broken Link Removed)
    http://library.thinkquest.org/C004535/molecule_transport.html
    http://www.biology4kids.com/files/cell2_passivetran.html
    http://www.accessexcellence.org/RC/VL/GG/ecb/comparison_active_passive_transport.html
    http://www.biologie.uni-hamburg.de/b-online/e22/22.htm

    In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

    I hope this helps. Thanks for asking.

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