Diffusion and Osmosis Quiz
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Questions and Answers

What is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one?

  • Endocytosis
  • Diffusion (correct)
  • Active transport
  • Facilitated diffusion
  • What is the pressure that goes outward onto the plant cell wall when water is taken with osmosis?

  • Oncotic pressure
  • Turgor pressure (correct)
  • Hydrostatic pressure
  • Plasmolysis
  • How do unicellular organisms primarily get their nutrients?

  • Osmosis
  • Photosynthesis
  • Absorption through the cell membrane
  • Eating other organisms (correct)
  • How do unicellular organisms exchange gas?

    <p>Oxygen moves from the cell membrane to the rest of the cell, and carbon dioxide comes out of the cell</p> Signup and view all the answers

    What process converts light energy into sugars in some unicellular organisms?

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

    Study Notes

    Osmosis

    • Osmosis is the movement of solvent molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
    • This process aims to equalize solute concentrations on both sides of the membrane.

    Turgor Pressure

    • Turgor pressure is the outward pressure exerted on a plant cell wall due to the influx of water during osmosis.
    • It helps maintain the cell's structural integrity and supports the plant's overall rigidity and posture.

    Nutrient Acquisition in Unicellular Organisms

    • Unicellular organisms primarily obtain nutrients through diffusion and active transport processes.
    • They absorb dissolved nutrients from their surrounding environment directly through their cell membranes.

    Gas Exchange in Unicellular Organisms

    • Gas exchange in unicellular organisms occurs primarily via diffusion.
    • Oxygen and carbon dioxide passively move across the cell membrane depending on concentration gradients.

    Photosynthesis in Unicellular Organisms

    • Some unicellular organisms, like algae and certain bacteria, convert light energy into sugars through photosynthesis.
    • This process involves capturing light energy to transform carbon dioxide and water into glucose and oxygen.

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    Description

    Test your knowledge of diffusion and osmosis with this quiz! Explore the concepts of concentration gradients, semipermeable membranes, and the movement of molecules.

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