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    what is tha diffusion-basic.passive and active transport

    0  Views: 425 Answers: 1 Posted: 14 years ago
    monik kurmi

    passive and active transport

    1 Answer

    In biology, diffusion is the passive movement of molecules from a region where they are found at higher concentration to a region where they are found at lower concentration.
    Passive transport is a movement of molecules across cells' membranes which don’t require energy expenditure by these cells. Diffusion is a passive transport
    Active transport is a process by which molecules are passed across membranes from a region where they are found in lower concentration to a region where they are found in higher concentration; such process require energy, and is enabled by carrier proteins, which are also called pumps.



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