1.8 Inorganic ipne

Question 1

where are inorganic ions found in the body

Answer 1

In solution in cytoplasm and body fluid , some in high conc some in low conc

Question 2

Describe the role of hydrogen , iron , sodium and phosphate ions

Answer 2

Hydrogen ions :
- maintains pH levels in body = high = acidic
- affects enzyme rate of reaction as can cause enzymes to denature
Iron ions :
- component of haem group of haemoglobin
- allowing oxygen to bind / associate for transport a’s oxyhaemoglobin
Sodium ions :
- involved in co transport of glucose / amino acids into cells
- involved in action potentials in neurones
- affects water potential of cells / osmosis
Phosphate ions :
- component of nucleotides allowing phosphodiester bonds to form in RNA / DNA
- component of ATP , allowing energy release
- Phosphorylates other compounds making them more reactive
- hydrophilic part of phospholipids allowing a bilayer to form