Inorganic ions

Question 1

Inorganic ion definition

Answer 1

Ions that dont contain carbon

Question 2

Where do inorganic ions exist

Answer 2

Inorganic ions occur in solution in the cytoplasm and body fluids of organisms

Question 3

Iron in haemoglobin

Answer 3

Each polypeptide chain is associated with a haem group
Includes a Fe2+ iron ion
Enables binding and transport of oxygen as oxyhaemoglobin

Question 4

Ions in membrane transport

Answer 4

Sodium-potassium pumps (Na+/K+-ATPase) Couples ATP hydrolysis with movement of sodium and potassium ions
Active transport of Na+ ions enables co transport of glucose
Maintains osmotic balance
Maintains membrane potential

Question 5

Hydrogen ions

Answer 5

Establish proton gradients
ATP sypthase couples H+ ions movement with ATP formation
Determines solution pH

Question 6

Calcium ions

Answer 6

Secretion of neurotransmitter
Muscle contraction
Signal transduction pathways
Blood clotting
Strengthens cartilage

Question 7

Phosphate ions

Answer 7

Structural roles
ATP formation and hydrolysis
DNA and RNA
Activate other substances through phosphorylation