Inorganic Ions

Question 1

What is an ion

Answer 1

An atom or compound which has a positive or negative electric charge

Question 2

What does inorganic mean

Answer 2

It doesnt contain carbon

Question 3

What are the features of Iron ions

Answer 3

Found in the protein haemoglobin in red blood cells
The oxygen binds to the Fe2+ and transports he oxygen to respiring cells

Question 4

Features of iron ions (2)

Answer 4

Haemoglobin has a quaternary structure with 4 polypeptide chains each with 1 Fe2+ so each haemoglobin can carry 4 oxygen molecules

Question 5

Features of hydrogen ions

Answer 5

Determines the pH of a solution
The higher the concentration of H+ ions the lower the pH of the solution

Question 6

Features of hydrogen ions (2)

Answer 6

A high or low concentration of H+ ions can denature proteins including enzymes and so affect enzymes rates of reaction
H+ions are also used in photosynthesis and resperation along with ATP synthase for the formation of ATP from ADP +Pi

Question 7

Features of sodium ions

Answer 7

Na+ is involved in the absorbtion of glucose into the blood
Co transported along with glucose into the epithelial cells of the small intestine down a Na+ concentration gradient

Question 8

Features of sodium ions (2)

Answer 8

Na+ also involved with the production of electrical impulse in neurons
Na+ also involved with water absorption in the kidneys

Question 9

Features of phosphate ions

Answer 9

Phosphate ions are added to ADP to produce ATP in a condensation reaction during resperation and photosynthesis
PO43- can also be added to other molecules to make them more reactive

Question 10

Features of phosphate ions (2)

Answer 10

PO43- is also used to join DNA and RNA nucleotides via phosphodiester bonds in the sugar phosphate backbone
PO43- makes up the hydrophilic part in the phospholipid bilayer