Flashcards in 3.1.7 and 8 water and other ions Deck (7):
Give a property of water
polar, solvent, reactive
Why is it useful to living organisms that water is polar?
acts as a universal solvent
why is it useful to living cells that water is a solvent?
reactions occur faster in solution
why is it useful to living cells that water is reactive?
takes place in hydrolysis and condensation reactions
name an important ion
hydrogen, sodium, iron, phosphate
how do water and ions enter cells?
they can move down a concentration gradient
both move through channel proteins
ions can move against a concentration gradient by active transport