INORGANIC IONS Flashcards
What does an (inorganic) ion have
electric charge
What is an ion with a positive charge called
cation
What is an ion with a negative charge called
anion
What is an inorganic ion
an ion that doesn’t contain carbon
What are 4 main important ions
1) iron
2) hydrogen
3) sodium
4) phosphate
What are iron ions an important component of
haemoglobin
What is the role of haemoglobin
carry oxygen around the boyd in the red blood cells
Is haemoglobin large or small
large
How many polypeptide chains does haemoglobin have and what structure does this mean it is
4, tertiary
What is in the centre of each of the polypeptide chains have in the centre
an iron ion (Fe2+)
What binds to the oxygen in haemoglobin
iron ion
What happens to the Fe2+ when oxygen is bound
it temporarily becomes Fe3+
What do hydrogen ions do in the body
determine pH
What happens when more H+ ions are present
pH is lowered , more acidic environment
What are sodium ions useful for
transport of glucose and amino acids across membranes
What process is sodium ions used for
co-transport
What are phosphate ions essential for
ATP and DNA
What is phosphate ion useful for in ATP
the bonds between the phosphate groups hold the energy
What state are inorganic ions found in organisms
in solution in the cytoplasm of cells and body fluids and larger molecules
