Inorganic ions and water Flashcards
Use and location of Fe+ ion
Haemoglobin
Help bind oxygen to rbc and transport
Na+ ion use and location
Plasma membranes
Help transport glucose + amino acids via co transport
Also help nerve impulses
PO4^3- ion use and location
DNA, ATP, RNA, Phospholipids
Structural purpose
Hep release energy in ATP
H+ ion use and location
Found in enzyme containing solutions
Determine pH of solutions to allow optimal enzyme function
Ca2+ ion location and use
Teeth, bones, cytoplasm of cells
Development of the body
Calculate pH
pH = -log10[H+]
Properties of water
H bonding
Specific heat capacity
Latent heat of vapourisation
Cohesion + surface tension
Water in metabolism
Water as solvent
How is the high shc in water helpful
Without H bonds water would be gaseous
H bonds produce collective strength requiring high energy to break, causing high shc
Water acts as buffer against sudden temp variation, maintain stable temp of aquatic life
How is Latent heat of vaporisation of water helpful
Lots of energy required to vaporise 1g of water
Effective in cooling down mammals
Why is waters cohesive properties helpful
Allows water to be pulled up xylem vessels
When water molecules meet air, they tend to be pulled back into water body(surface tension). This allows support of small organism like pond skaters
How is water used in metabolism
Hydrolysis
Chemical reactions occur in aqueous medium
Major raw material in photosynthesis
how is Water used as a solvent
Gas such as O2 and CO2 dissolve
Wastes like Ammonium and urea dissolve
Inorganic ions and small hydrophilic molecules dissolve
Enzymes dissolve
Other features of water
Not easily compressed so can provide support- hydrostatic skeleton in worms
Transparency so plants can still photosynthesise
