Osmoregulators:
a. change the ECF osmotic pressure when osmotic pressure in the surrounding water changes.
b. have to regulate ICF organic osmolytes to counteract cell volume changes.
c. maintain a relatively steady ECF osmotic pressure even when the osmotic pressure changes in the external environment.
d. are hyperosmotic in marine environments.
e. are hypo-osmotic in freshwater environments..
C
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