Inorganic Ions Flashcards
1
Q
what is an ion?
A
ion with electric charge
2
Q
what is an inorganic ion?
A
ion which does not contain carbon
3
Q
where do inorganic ions occur?
A
- body fluids of organisms
- solution in cytoplasm of cells
- high and low concentrations
4
Q
what does the role of ion depend on?
A
its properties
5
Q
name four main inorganic ions
A
- sodium
- phosphate
- hydrogen
- iron
6
Q
what is the role of sodium ions?
A
co-transport for glucose and amino acids across plasma membranes
7
Q
what is the role of iron ions?
A
component of haemoglobin (Fe 2+/ Fe 3+)
8
Q
what is the role of phosphate ions?
A
- component of DNA/ RNA
- stores energy in ATP molecules
9
Q
what is the role of hydrogen ions?
A
- determines pH of solutions - higher concentration of H+ ions the more acidic, the lower pH
- affects functioning of enzymes
