3.1.7/3.1.8-Water and inorganic ions Flashcards
(12 cards)
What type of bond forms between two water molecules?
Hydrogen
Water molecules interact with each other.
What property is it said to have as a result of this?
Cohesive
Water molecules interact with other charged particles.
What property is it said to have as a result of this?
Adhesive
Water is very capable of dissolving other charged particles.
What name is given to it as a result of this?
The universal solvent
Water requires a lot of energy to raise the temperature.
What property is it said to have as a result of this?
High specific heat capacity
Water requires a lot of heat energy to evaporate.
What property is it said to have as a result of this?
High latent heat of evaporation
Explain 5 properties that make water important for organisms
1.A metabolite in condensation reactions/hydrolysis/photosynthesis
2.A solvent so metabolic reactions can occur
3.High specific heat capacity so buffers changes
in temperature
4.Large latent heat of vaporisation so provides cooling effect through evaporation
5.Cohesion so supports cohesion tension theory in plants
6.Cohesion so produces surface tension supporting small organisms
Give 2 properties of water that are important in the cytoplasm of cells and explain it’s importance in the cytoplasm
Polar molecule-Acts as universal solvent
Reactive-Takes place in hydrolysis
compare and contrast the processes by which water and inorganic ions enter cells
-both move down concentration gradient
-both move through protein channels in membrane
-ions can move against concentration gradient by active transport
Role of iron ions in the cell
Haemoglobin binds with oxygen
Role of phosphate ions in the cell
Used to produce ATP
Makes compounds more reactive through phosphorylation
Hydrophilic part of phospholipids
Role of sodium ions in the cell
Co-transport of glucose
Sodium moved out by active transport
Create a sodium concentration gradient 
