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B1: Quiz 11
B1: Quiz 11
1)
a) Give a definition of active transport.
b) Is energy required for active transport to take place? If energy is required, how is this energy obtained?
c) The diagram below shows the distribution of some particles both outside and inside a cell.
a) Give a definition of active transport.
b) Is energy required for active transport to take place? If energy is required, how is this energy obtained?
c) The diagram below shows the distribution of some particles both outside and inside a cell.
The cell undertakes active transport; will the net movement of these particles be from left to right or from right to left?
2) Root hair cells undertake active transport to bring in as many mineral ions as possible.
a) What does the plant use these mineral ions for?
b) Why do the root hair cells need to undertake active transport to bring in these mineral ions rather than using diffusion?
c) A plant is growing in soil that is waterlogged. How does waterlogged soil create an issue for root hair cells with respect to bringing in mineral ions? Also, discuss what effect this could have on the growth and development of the plant.
3) Active transport happens in humans inside the gut.
a) Give two substances that are taken into the bloodstream from the gut by active transport.
b)
i) If there was a higher concentration of nutrients in the gut compared to the bloodstream, would the cells in the gut need to engage in active transport? Explain your answer.
ii) If there was a higher concentration of nutrients in the bloodstream compared to the gut, would the cells in the gut need to engage in active transport? Explain your answer.
iii) Why is it useful that the cells in the gut have the ability to engage in active transport?
2) Root hair cells undertake active transport to bring in as many mineral ions as possible.
a) What does the plant use these mineral ions for?
b) Why do the root hair cells need to undertake active transport to bring in these mineral ions rather than using diffusion?
c) A plant is growing in soil that is waterlogged. How does waterlogged soil create an issue for root hair cells with respect to bringing in mineral ions? Also, discuss what effect this could have on the growth and development of the plant.
3) Active transport happens in humans inside the gut.
a) Give two substances that are taken into the bloodstream from the gut by active transport.
b)
i) If there was a higher concentration of nutrients in the gut compared to the bloodstream, would the cells in the gut need to engage in active transport? Explain your answer.
ii) If there was a higher concentration of nutrients in the bloodstream compared to the gut, would the cells in the gut need to engage in active transport? Explain your answer.
iii) Why is it useful that the cells in the gut have the ability to engage in active transport?