Cell Membrane and Transport Study Guide
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Questions and Answers

What is the term used to describe a cell membrane that only allows certain molecules to move across?

  • Permeable
  • Fully permeable
  • Semipermeable (correct)
  • Impermeable
  • Which type of cell transport requires energy to move substances across the membrane?

  • Osmosis
  • Active transport (correct)
  • Diffusion
  • Passive transport
  • What is the primary component of the cell membrane?

  • Cholesterol
  • Phospholipid bilayer (correct)
  • Proteins
  • Nucleic acids
  • In which state is an animal cell considered to be in equilibrium with its surroundings?

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

    Which structure in the cell membrane helps substances that are too big to pass through?

    <p>Transport proteins</p> Signup and view all the answers

    What type of transport does not require energy to move substances across the cell membrane?

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

    Which type of transport involves the movement of molecules from an area of high concentration to an area of low concentration with no energy required?

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

    What is the process called when water diffuses across a selectively permeable membrane from high concentration to low concentration?

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

    In which type of transport does a molecule move from low concentration to high concentration against the concentration gradient?

    <p>Protein pump</p> Signup and view all the answers

    Which process involves the cell engulfing something?

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

    Which transport mechanism involves the cell releasing something outside?

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

    What does passive transport NOT require?

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

    Which process involves the movement of molecules across the phospholipid bilayer with the help of a transport protein?

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

    What happens to an animal cell placed in saltwater?

    <p>It shrivels</p> Signup and view all the answers

    In which state is an animal cell when placed in distilled water?

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

    Which type of transport moves molecules against the concentration gradient?

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

    What is the main characteristic of osmosis?

    <p>Movement of water from high concentration to low concentration</p> Signup and view all the answers

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