Cell Biology: Growth and Division
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Questions and Answers

What is a primary reason cells prefer to divide instead of continuing to grow indefinitely?

  • Cells can only absorb nutrients if they are small. (correct)
  • Larger cells can produce more energy.
  • The surface area to volume ratio becomes unfavorable. (correct)
  • Larger cells have more DNA to meet their needs.

    • How is the surface area to volume ratio obtained?

  • By dividing the surface area by the volume. (correct)
  • By subtracting the volume from the surface area.
  • By adding the surface area and the volume.
  • By multiplying the surface area by the volume.

    • What happens to the surface area to volume ratio as cells increase in size?

  • It remains constant regardless of size.
  • It decreases, complicating nutrient exchange. (correct)
  • It fluctuates based on the type of cell.
  • It increases, making nutrient exchange easier.

    • What challenge do larger cells face regarding nutrient and waste management?

    <p>They cannot effectively move nutrients and waste across the membrane. (B)</p> Signup and view all the answers

    What occurs when a cell's size increases beyond a certain point?

    <p>The DNA within the cell can no longer meet its metabolic demands. (C)</p> Signup and view all the answers

    Flashcards

    Cell Growth Limit

    Cells divide instead of continuously growing larger because a larger cell struggles to move nutrients and waste products across its membrane efficiently.

    Surface Area to Volume Ratio

    A ratio comparing the surface area of a cell to its volume

    Surface Area to Volume (ratio)

    As cells get larger, their volume grows faster than their surface area.

    Reasoning for division

    Reduced surface area to volume ratio, making it harder for a large cell to get enough nutrients, release wastes.

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    Cell size limits

    Large cell size limits the nutrient and waste transport, forcing cells to divide for efficient function

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