3.1.7 and 8 water and other ions Flashcards Preview

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Flashcards in 3.1.7 and 8 water and other ions Deck (7):
1

Give a property of water

polar, solvent, reactive

2

Why is it useful to living organisms that water is polar?

acts as a universal solvent

3

why is it useful to living cells that water is a solvent?

reactions occur faster in solution

4

why is it useful to living cells that water is reactive?

takes place in hydrolysis and condensation reactions

5

name an important ion

hydrogen, sodium, iron, phosphate

6

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

7

3 properties of water that are important in biology

Is a metabolite
Is a solvent
Has a (relatively)high heat capacity
Has a (relatively)largenlatent heat of vaporisation/ evaporation
Has cohesion / hydrogen bonds between molecule