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BIO DEATH #1 > OSMOREGULATION > Flashcards

Flashcards in OSMOREGULATION Deck (10)
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1

Osmoregulation

the maintenance of salt and water balance in an organism

2

osmosis

diffusion but water is the thing crossing the membrane. not the solutes

3

isoosmotic

same osmolarity as surroundings

4

hyperosmotic

greater amount of solutes than surrounding

5

hypoosmotic

lesser amount of solutes than surroundings

6

osmoconformers

isoosmotic with surroundings

7

osmoregulators

must control its internal osmolarity
if lives in hyper osmotic environment must take in water
if it lives in a hypoosmotic environment must excrete water

8

stenohaline

can tolerate only narrow changes in external osmolarity

9

euryhaline

organisms can tolerate large fluctuations in external osmolarity

10

anhydrobiosis

ability to survive when water source dries up