Page 55 - York Global Science 6 - Physical Science
P. 55
Physical Science
World of Science
Diffusion is very important in cells. Substances like oxygen and carbon
dioxide move in and out of cells by diffusion.
In cells, the temperature, concentration gradient and the surface area that
separates different areas all change how fast diffusion happens. A larger
surface area makes diffusion happen more quickly.
Let’s Reflect
1 What is diffusion?
2 How can you speed up diffusion?
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