Specialised Exchange Systems Flashcards

1
Q

Ficks Law

A

Rate of diffusion is proportional to surface area and concentration difference and inversely proportional to the thickness of the membrane

(SA x concentration gradient) / thickness of membrane

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2
Q

Surface area

A

As surface area increases the rate of diffusion also increases as there are more places for diffusion to happen faster

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3
Q

Concentration gradient

A

The larger the concentration gradient, the faster the rate of diffusion

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4
Q

Thickness of membrane

A

The thicker the membrane, the slower the rate of diffusion as the diffusion distance is greater

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5
Q

Surface area to volume ratio

A

Surface area / volume

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6
Q

As bacteria are so small, gas exchange…

A

Occurs through the cell wall

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