Passive Transport Quiz
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Questions and Answers

Which form of passive transport involves the movement of water molecules across a selectively permeable membrane?

  • Filtration
  • Facilitated diffusion
  • Osmosis (correct)
  • Simple diffusion
  • What is the primary driving force for passive transport?

  • Concentration gradient (correct)
  • Chemical energy
  • Mechanical energy
  • Electrical energy
  • Which type of transport requires no energy input?

  • Filtration
  • Simple diffusion (correct)
  • Active transport
  • Facilitated diffusion
  • What is the analogy used to explain passive transport in the text?

    <p>Moving from the train to the platform of a subway station</p> Signup and view all the answers

    In the context of passive transport, what is the opposite of active transport?

    <p>Passive diffusion</p> Signup and view all the answers

    What is passive transport also known as?

    <p>Passive diffusion</p> Signup and view all the answers

    In passive transport, how does an ion or molecule pass through a cell wall?

    <p>Via a concentration gradient</p> Signup and view all the answers

    Which form of passive transport involves an ion or molecule passing through a cell wall without the assistance of a transport protein?

    <p>Simple diffusion</p> Signup and view all the answers

    How does active transport differ from passive transport?

    <p>Active transport requires energy, while passive transport does not</p> Signup and view all the answers

    What analogy is used to describe passive transport in the text?

    <p>Moving from the train to the platform of a subway station</p> Signup and view all the answers

    Study Notes

    Passive Transport

    • Osmosis is the form of passive transport that involves the movement of water molecules across a selectively permeable membrane.
    • The primary driving force for passive transport is a concentration gradient, where molecules move from an area of high concentration to an area of low concentration.
    • Passive transport requires no energy input, as it uses the kinetic energy of molecules to move them across the membrane.

    Analogy and Context

    • The analogy used to explain passive transport is the diffusion of people into a less crowded area.
    • Passive transport is the opposite of active transport, where energy is required to move molecules across the membrane.
    • Passive transport is also known as diffusion.

    Mechanisms of Passive Transport

    • In passive transport, an ion or molecule passes through a cell wall by moving through the lipid bilayer or through a transport protein.
    • Facilitated diffusion is the form of passive transport that involves an ion or molecule passing through a cell wall with the assistance of a transport protein.
    • Simple diffusion is the form of passive transport that involves an ion or molecule passing through a cell wall without the assistance of a transport protein.

    Comparison to Active Transport

    • Active transport differs from passive transport in that it requires energy input to move molecules across the membrane, often against a concentration gradient.
    • The analogy used to describe passive transport is the diffusion of people into a less crowded area, whereas active transport is like going up a staircase.

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    Description

    Test your knowledge of passive transport with this quiz! Explore the concept of passive diffusion and how ions and molecules move through cell walls. See if you can grasp the process as it occurs from high to low concentration areas.

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