Excretion
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Define excretion
the removal of excess water, solutes, wastes and some harmful substances from the body by way of a urinary system or glands
example of excretory products of plants and animals
oxygen for plants and for animals co2 and nitrogenous compounds
why are waste formed by the breakdown of organic compounds dangerous
they can lead to tissue poisoning, starvation, and suffocation since tissues would not be able to absorb food or o2 if filled with wastes
Wastes are either _________ or carried into the __________ active transport in the ______
diffused blood stream capillaries
how does ammonia come to be (toxic) how does urea form (toxic)
ammonia forms as amino groups are split from amino acids (ammonia is toxic to cells) Urea is formed in the liver when two ammonia molecules join with co2
what adaptation do desert animals do because of very little water what adaption do birds do cuz they unable to carry load of water
they secrete very concentrated urine due to their super long loop of HENLE ( more water reabsorption) they excrete uric acid and most h20 is reabsorbed in a process called insolubilization
crystaline –>insoluble substance expelled as a solid paste … read more
Crystals in urine occur when there are too many minerals in your urine and not enough liquid.
Osmoregulation
The control of the water balance of the blood, tissue or cytoplasm of an living organism
what happens to the wastes in the blood of animals
either diffused or carried into the blood via active transport into the capillaries. Blood will than carry the wastes to the urinary system, specifically the kidneys
describe the three methods that organisms use to get rid of ammonia and wastes Desert animals Birds Freshwater fish
Birds : crystalline insoluble substance expelled as solid paste and they save water via insolbilization, and excrete uric acid Fresh water fish excrete ammonia through their gills which is called flushing desert animals secrete very concentrated urine and have a long loop of henle for water reabsorption
what is detoxification
Process where ammonia is converted urea