water and inorganic ions Flashcards
what is water
an important biological molecule which makes up to 60-70% of ur body
hydrogen bonds form between different water molecules between the oxygen and hydrogen atoms
this results in 5 key water properties what are they
-metabolite [ hydrolysis and condensation]
- important solvent so metabolic reactions can occur
- has a high specific heat capacity so buffering changes in temp
-large latent heat of vaporisation providing a colling effect with loss of water through evaporation
-strong cohesion between water molecules this supports collumn of water in the xylem and provides surface tension
where can inorganic ions occur
- solution in the cytoplasm
- body fluids of organisms
- some in high or very low concentrations
true or false water is dipolar
true
each inorganic ion has a specific role depending on its properties
what are the 4 types of inorganic ions
hydrogen ions
phosphate ions
sodium ions
iron ions
what is the function of hydrogen ions
- lowers the PH of solutions and impact enzyme function and haemoglobin function
function of iron ions
component of haemoglobin in the transport of oxygen
function of sodium ions
involved in the co transport of glucose and amino acids in absorption
function of phosphate ions
component of DNA RNA ATP
-joins nucleotides in phosphodiester bonds in backbone of DNA and RNA
Phosphorylates other compounds usually making them more reactive
Affects osmosis