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cell division, mitosis and the cell cycle (stage 1- growth- incresses the…
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stem cell treatment with stem cells may be able to help conditions such as diabetes and paralysis. some people object to the sed of sten cells on ethical or religious backgrounds.
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transport in cells- adaptatons for diffuson- the greater difference in concentration the faster the rate of diffusion.
diffusion NO energy required- movement of particles in a solution or gas from a higherto a lower conentration. for example O2and CO2 in gas exchange
osmosis NO energy required- movement of water from a dilute solution to more concentrated solution. For ecample plant absorbe water from the soil by osmosis through their root hair cells.
active transport- ENERGY required- movemtns of particles from a dilute solution to a move consintrated solution. for example movement of mineralions into roots of plants and the movement of glucose into the small intestines.
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