Inorganic Ions

Question 1

Ions

Answer 1

• atoms that have an electric charge
• positive = cation
• negative = anion

Question 2

inorganic ions

Answer 2

• doesn’t contain carbon
• inorganic ions in the cytoplasm of cells and in the body fluids of organisms
• each have a specific role

Question 3

Iron Ions In Haemoglobin

Answer 3

• haemoglobin = large protien that carries O2 around the body
• made up of 4 dif polypeptide chains which each have Fe2+ in centre
• Fe2+that binds to O2 in haemoglobin
• when oxygen is bound Fe2+ temporarily becomes Fe3+ until oxygen released

Question 4

Hydrogen Ions

Answer 4

• pH calculated based on concentration of H+ in environment

- more H+ lower the pH

Question 5

Sodium Ions

Answer 5

• Glucose + AA need a bit of help crossing cell membranes which can be transported into a cell alongside Na+
• cotransporter

Question 6

Phosphate Ions

Answer 6

• PO4 3- attached top another molecule known as a phosphate group
• DNA, RNA + ATP contain phosphate groups
• bonds between phosphate groups that store energy in ATP
• phosphate groups in DNA + RNA allow nucleotides to join up to form polynucleotides