Cell Transport: Facilitated Diffusion and Osmosis
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Questions and Answers

Which process involves the movement of substances out of the cell?

  • Exocytosis (correct)
  • Endocytosis
  • Pinocytosis
  • Phagocytosis
  • What is the main energy currency used by cells to power their functions?

  • ADP
  • DNA
  • ATP (correct)
  • RNA
  • In which type of endocytosis does the cell engulf and digest particles?

  • Exocytosis
  • Pinocytosis
  • Receptor-mediated endocytosis
  • Phagocytosis (correct)
  • Which transport mechanism is considered passive and does not require energy input?

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

    Which process involves the movement of substances into the cell?

    <p>Endocytosis</p> Signup and view all the answers

    Which process requires additional energy for substances to move from lower to higher concentration?

    <p>Active transport</p> Signup and view all the answers

    Which type of molecules can easily move between phospholipids through simple diffusion?

    <p>Small, hydrophobic molecules</p> Signup and view all the answers

    What type of transport is independent of concentration gradients and requires additional energy?

    <p>Bulk transport</p> Signup and view all the answers

    In which process does the cell expend additional energy to move substances down their concentration gradient?

    <p>Endocytosis</p> Signup and view all the answers

    What is the main difference between passive transport and facilitated diffusion?

    <p>Energy requirement</p> Signup and view all the answers

    Which type of transport involves substances moving from high to low concentration without the need for additional energy?

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

    What is the main difference between facilitated diffusion and simple diffusion?

    <p>Facilitated diffusion requires assistance from specific transport proteins, while simple diffusion does not.</p> Signup and view all the answers

    In an isotonic environment, why does a cell experience no net gain or loss of water?

    <p>The water concentration is the same on both sides of the membrane.</p> Signup and view all the answers

    Which process involves the movement of macromolecules that are too large to be transported by proteins?

    <p>Endocytosis</p> Signup and view all the answers

    What happens to plant cells in a hypotonic environment?

    <p>They maintain turgidity by gaining water.</p> Signup and view all the answers

    How do molecules move in active transport compared to passive transport?

    <p>Active transport requires energy to move molecules against the gradient; passive transport does not.</p> Signup and view all the answers

    What distinguishes exocytosis from endocytosis?

    <p>Exocytosis involves the release of substances outside the cell; endocytosis brings substances into the cell.</p> Signup and view all the answers

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