This is fairly similar but a bit harder I think:
"The process of osmosis and it's importance to living organisms"
This what I have so far:
. Description of osmosis
. Uptake of water into root cells, symplastic pathway through cytoplams by osmosis, uptake into xylem via active transport of ions into the xylem vessel
. Keeping palisade cells turgid to provide max SA for sunlight
.Treatment of diarrhoea e.g. from cholera: ORS - glucose and Na+ absorbed into epithelium via co-transport, lowers WP of epithelial cells - water flows by osmosis into epithelial cells - rehydrating
. Uptake of excess water in large intestine - form solid faeces
. capillaries - uptake of tissue fluid at venous end of capillary bed after exchange of substances between tissue fluid and cells
. Insects at rest - tracheoles fill with water reducing rate of gas exchange. During flight/when active due to lactic acid production water is taken up by muscles by osmosis - increasing rate of gas exchange
Thats basically most of what I could think of but it's difficult to link them together and I don't think thats enough for a full 3/4 page essay