Organisms exchange substances with their environment AQA AS Biology PART 1 of 5 TOPICS: Surface are to volume ratio

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Organisms exchange substances with their environment (AQA AS
Biology) PART 1 of 5 TOPICS
Surface area to volume ratio:
The smaller the object the bigger the surface area to volume ratio. This means that there is a smaller
diffusion pathway which increases the metabolic rate.
Surface area of sphere = 4r2
Volume of sphere = (4/3)r3
] That's all that you need to know about surface area to volume ratio. NB: The equations must be
known by heart [

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