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B1: Quiz 9
B1: Quiz 9
1) Give a definition of diffusion.
2) The diagram below shows the distribution of particles on two sides of a membrane.
2) The diagram below shows the distribution of particles on two sides of a membrane.
a) Will the net movement of particles be from left to right, or from right to left?
b) Will any of the particles move in the opposite direction to the direction that you gave for your answer to part a; yes or no?
3) Without looking at the later questions, what are the three main factors that affect the rate of diffusion?
4) Does a higher temperature increase or decrease the rate of diffusion? Explain your answer.
5)
a) What does concentration gradient refer to?
b) Does a greater concentration gradient increase or decrease the rate of diffusion? Explain your answer.
6) Does a greater surface area increase or decrease the rate of diffusion? Explain your answer.
b) Will any of the particles move in the opposite direction to the direction that you gave for your answer to part a; yes or no?
3) Without looking at the later questions, what are the three main factors that affect the rate of diffusion?
4) Does a higher temperature increase or decrease the rate of diffusion? Explain your answer.
5)
a) What does concentration gradient refer to?
b) Does a greater concentration gradient increase or decrease the rate of diffusion? Explain your answer.
6) Does a greater surface area increase or decrease the rate of diffusion? Explain your answer.