Topic: Surface area to volume ratio, Gas exchange, Digestion and absorption, Mass transport in animals, Mass transport in plants
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 = 4πr2
Volume of sphere = (4/3)πr3
] That’s all that you need to know about surface area to volume ratio. NB: The equations must be known by heart [