Excretion

Question 1

Define excretion

Answer 1

the removal of excess water, solutes, wastes and some harmful substances from the body by way of a urinary system or glands

Question 2

example of excretory products of plants and animals

Answer 2

oxygen for plants and for animals co2 and nitrogenous compounds

Question 3

why are waste formed by the breakdown of organic compounds dangerous

Answer 3

they can lead to tissue poisoning, starvation, and suffocation since tissues would not be able to absorb food or o2 if filled with wastes

Question 4

 Wastes are either _________ or carried into the __________ active transport in
the ______

Answer 4

diffused
blood stream

capillaries

Question 5

how does ammonia come to be (toxic)

how does urea form (toxic)

Answer 5

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

Question 6

what adaptation do desert animals do because of very little water

what adaption do birds do cuz they unable to carry load of water

Answer 6

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

Question 7

crystaline –>insoluble substance expelled as a solid paste … read more

Answer 7

Crystals in urine occur when there are too many minerals in your urine and not enough liquid.

Question 8

Osmoregulation

Answer 8

The control of the water balance of the blood, tissue or cytoplasm of an living organism

Question 9

what happens to the wastes in the blood of animals

Answer 9

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

Question 10

describe the three methods that organisms use to get rid of ammonia and wastes

Desert animals

Birds

Freshwater fish

Answer 10

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

Question 11

what is detoxification

Answer 11

Process where ammonia is converted urea