CHAPTER 12 THE CELL CYCLE

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CHAPTER 12THE CELL CYCLE
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Introduction
Reproduction continuity of life
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Calculate the Surface AreaVolume Ratios for the
cubes below. (SAV) SA l x w x 6 V l x w x h

1 1cm
2 2cm
3 (3cm)
SA 6 cm2 V 1 cm3 SAV 61
SA 24 cm2 V 8 cm3
SA 54 cm2 V 27 cm3
SAV 31
SAV 21
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• Now, assume each CUBE is one CELL As the cell
  gets larger
• Does its surface area get greater?
• Does its volume get greater?
• Does its surface areavolume ratio get greater?
• Does increased size become an advantage to the
  cell? Why or why not?

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In mammals, heat loss through the skin occurs
naturally. Which of the following mammals would
lose heat faster... ..Why?
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Think back to the Elephant and the Mousedo you
want to change your answer? Which animal will
lose heat the fastest?
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If you said the mouse, you are right!!!
The mouse would lose heat faster due to its
Surface AreaVolume Ratio
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