unit 3, surface area to volume ratio

Question 1

how do single cells have quicker diffusion

Answer 1

single cells are one layer thick , so there is less distance to cover, so there is a quicker rate of diffusion as there is a shorter diffusion pathway

Question 2

what is diffusion like in large organisms

Answer 2

multicellular , large organisms have too long of a diffusion pathway as they have a small surface area to volume ratio

Question 3

specialised cells for diffusion

Answer 3

•red blood cells, have a thin membrane so gases can easily diffuse through
•root hair cells, have a large surface are to increase rate of diffusion