Surface area to volume ratio

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9 Terms

1
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The _______ the object the _______ the surface area to volume ratio

  • 1. Larger 2. Smaller

  • 1. Smaller 2. Larger

2
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How do you calculate surface area to volume ratio?

Divide surface area by the volume

3
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What organisms have a higher rate of metabolism and why?

  • Smaller organisms

  • Lose heat faster due to larger surface area:volume

4
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What organisms require specialised exchange system and why?

  • Larger organisms

  • Relatively less surface area available for exchange of substances compared to their total volume

  • Distance from outside to middle of organism to great for diffusion

5
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What adaptations increases SA:V for absorbing digested food?

Villi and microvilli

6
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What adaptations increases SA:V for human gas exchange?

Alveoli and bronchioles

7
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What adaptations increases SA:V for insect gas exchange?

Spiracles and tracheoles

8
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What adaptations increases SA:V for fish gas exchange?

Gill filaments and lamellae

9
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What adaptations increases SA:V for plant gas exchange?

Thin wide leaves