Biology help!!! Which statement is true of both active transport and facilitated diffusion?

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Which statement is true of both active transport and facilitated diffusion? Both involve proteins in the cell membrane.

Both occur in only one direction.

Both require ATP.

Both move materials down a concentration gradient.

3 Answers

  • Active transport is the movement of a substance against its concentration energy (from low to high concentration). In all cells, this is usually concerned with accumulating high concentrations of molecules that the cell needs, such as ions, glucose, and amino acids. If the process uses chemical energy, such as from adenosine triphosphate (ATP), it is termed primary active transport. Active transport uses energy…

    on the other hand Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is a process of passive transport, facilitated by integral proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane integral proteins. facilitated diffusion does not use any form of energy.

    so your answer is the first one. they occur in only one direction at a time.

    Source(s): molecular biology– biochem major
  • Answer: Both involve protein in the cell membrane.

    Active diffusion requires energy (ATP) and mostly it is done to move materials against the concentration gradient (electron transport chain reaction). Facilitated diffusion helps big and or charged molecules, such as glucose, to enter the cell since it can’t easily diffuse through the cell membrane. One example of a movement that is not always one direction is the sodium-potassium pump, which moves sodium out of the cell and pumps in potassium inside using ATP.

    Source(s): College grad (biochem major)
  • Both only occur in one direction

    only active transport requires ATP and they both typically move materials up or against a concentration gradient

    Source(s): biology and chemistry class

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