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There is a worksheet I was given on my first lesson. The question is
1. A student was told by teacher that the surface area to volume ratio of an organism varies according to its size. The student decided to investigate this using two spheres, A and B as models of organisms of different sizes.
b) The teacher also told the student that differences in the SA:V such as those seen between sphere A and B ,have influences the need for transport systems.
Explain how such influenced the need for transport systems in mammals.
How do I answer this question, do I discuss specialised exchange surfaces, do I talk about difference between single cell organisms and multi cellular organisms
1. A student was told by teacher that the surface area to volume ratio of an organism varies according to its size. The student decided to investigate this using two spheres, A and B as models of organisms of different sizes.
b) The teacher also told the student that differences in the SA:V such as those seen between sphere A and B ,have influences the need for transport systems.
Explain how such influenced the need for transport systems in mammals.
How do I answer this question, do I discuss specialised exchange surfaces, do I talk about difference between single cell organisms and multi cellular organisms
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Are you sure you've posted in the right place? 
Here's a link to our subject forum which should help get you more responses if you post there. 
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