Cell Metabolism
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Questions and Answers

Which of the following is a characteristic of diffusion?

  • It depends on factors such as temperature and concentration difference (correct)
  • It is the movement of water molecules from a region of higher water concentration to a region of lower water concentration
  • It requires energy
  • It occurs from low concentration to high concentration

    • Which of the following is NOT an example of diffusion?

  • The smell of perfume
  • Diffusion of oxygen into a cell for respiration
  • Gaseous exchange in alveoli of lungs
  • Absorption of food in villi (correct)

    • Which of the following factors does NOT affect the rate of diffusion?

  • Temperature
  • Distance
  • Size of the molecules (correct)
  • Concentration difference

    • What does the presence of a yellow precipitate indicate in the iodoform test for alcohol?

    <p>Ethanol is present</p> Signup and view all the answers

    When is fermentation considered complete?

    <p>When no more bubbles of CO2 are produced</p> Signup and view all the answers

    What is the movement of water molecules from a region of higher water concentration to a region of lower water concentration called?

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

    Which of the following is NOT a factor that affects the rate of diffusion?

    <p>Type of medium</p> Signup and view all the answers

    What is the process called when water vapor moves through the stomata of a leaf?

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

    Which of the following is NOT a characteristic of diffusion?

    <p>It requires energy</p> Signup and view all the answers

    What is the purpose of the iodoform test for alcohol?

    <p>To confirm the presence of ethanol</p> Signup and view all the answers

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