Introduction to Cells and Cell Theory
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Questions and Answers

Which property increases faster as cell size increases?

  • Surface area
  • Ratio of surface area to volume
  • Both increase at the same rate
  • Volume (correct)
  • In a large cell, how does the surface area to volume ratio compare to that of a small cell?

  • It decreases (correct)
  • It increases
  • It fluctuates
  • It remains the same
  • What is the relationship between surface area and volume in a small cell?

  • Surface area exceeds volume (correct)
  • Volume exceeds surface area
  • They are equal
  • None of the above
  • How does the efficiency of material transfer compare between a small and a large cell?

    <p>Efficiency is higher in small cells</p> Signup and view all the answers

    What is the impact of increasing cell size on the balance between surface area and volume?

    <p>Volume increases faster than surface area</p> Signup and view all the answers

    Why are cells limited in size?

    <p>To ensure a more efficient exchange of substances</p> Signup and view all the answers

    What does the Cell Theory state?

    <p>All living things are composed of cells</p> Signup and view all the answers

    Which component is at the center of every cell?

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

    How is a cell's surface area calculated?

    <p>$4 imes ext{pi} imes ext{radius}^2$</p> Signup and view all the answers

    What happens to a cell's surface area as its size increases?

    <p>It increases slower than its volume</p> Signup and view all the answers

    Why is it important for a cell to have a high surface area to volume ratio?

    <p>To ensure efficient exchange of substances with the environment</p> Signup and view all the answers

    What is the significance of the mid-seventeenth century in relation to the discovery of cells?

    <p>It is when microscopes were invented, allowing cells to be observed.</p> Signup and view all the answers

    Who was the first to observe and describe unicellular organisms?

    <p>Antoni van Leeuwenhoek</p> Signup and view all the answers

    What did Robert Hooke observe when examining a piece of cork under a microscope?

    <p>A matrix of tiny rooms, which he called cells.</p> Signup and view all the answers

    How did advances in microscopy contribute to the Cell Theory?

    <p>By enabling scientists to observe and describe unicellular organisms.</p> Signup and view all the answers

    What does the Cell Theory state regarding cell origins?

    <p>All cells arise from pre-existing cells.</p> Signup and view all the answers

    What defines an organism as multicellular?

    <p>Consists of many cells.</p> Signup and view all the answers

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