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comapre and contrast the following types of cellular transport...

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adilyas | eNoter

Posted April 22, 2013 at 2:47 PM via web

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comapre and contrast the following types of cellular transport

                    diffusion         facilated diff       osmosis       active  transpor

  1definition        ...........             ............            ..........             ............

2 is energy in the ............         ............            ...........            .......

form of ATP

required

 

3- are materials moving ........  ..........        ..........           .............

from higher conc to

a lower concentration

 

4- are protein carriers .........    ...........         .............         .............

or channels involved

 

5- exp of substance     ...............         ..........           ..........           .............. 

that uses this type

of transport

1 Answer | Add Yours

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orchid101 | College Teacher | (Level 1) Associate Educator

Posted April 26, 2013 at 12:59 PM (Answer #1)

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Osmosis is the net diffusion of water from a weak solution to the more concentrated solution when the two are separated by means of a semi permeable membrane.

Diffusion is, therefore, the movement of molecules or ions of a solute or a solvent, be it a solid, liquid or gas from the region of its higher concentration to that of its lower concentration.

Active transport usually occurs across the protoplasmic membrane (i.e., plasma membrane, tonoplast, etc.). Active transport is not spontaneous and does not proceed towards an equilibrium. The devine force for active absorption is energy derived from metabolic processes.

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