Which of the following statements is incorrect regarding facilitated diffusion?

  • A
    Facilitated diffusion occurs for lipid-soluble molecules.
  • B
    Facilitated diffusion occurs with the help of special membrane proteins.
  • C
    Proteins do not establish a concentration gradient; a concentration gradient must already be present.
  • D
    Facilitated diffusion occurs along the concentration gradient.

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Similar Questions

Which of the following is $NOT$ associated with passive transport?

Facilitated diffusion in cells is brought about by . . . . . . in the cell membrane.

$A-$ In an antiport,both molecules move in opposite directions.
$R -$ In symport,only one molecule crosses the membrane in the same direction.

What are the factors affecting the rate of diffusion?

Non-living components of $xylem$ tissues are involved in

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