Bio molecules Inorganic Ions

Question 1

Where can inorganic ions be found?

Answer 1

In cytoplasm and bodily fluids

Question 2

What are the four main ions in the body?

Answer 2

Iron
Hydrogen
Sodium
Phosphate

Question 3

What are ions?

Answer 3

Particles with electric charge.
Can be inorganic or organic (contain carbon)
Can be a single atom or a group of atoms

Question 4

What are the functions of iron?

Answer 4

Used to carry oxygen
In haemoglobin
Fe2+ bind to O atoms

Question 5

What are the functions of hydrogen ions?

Answer 5

Maintain pH, help with aerobic respiration
Greater concentration H+ lower pH
Important in ATP synthesis in the mitochondria during cellular respiration

Question 6

Why are H+ important in ATP synthesis?

Answer 6

Low H+ mitochondrial matrix
High H+ mitochondrial membrane
Proton gradient used to generate energy

Question 7

What are the functions of sodium ions?

Answer 7

Responsible for co-transport + nervous system
~ communication between neurones
Helps glucose + amino acids enter cell - through co-transport eg. Digestive system

Question 8

What are phosphate ions functions?

Answer 8

Used in cell membrane, DNA, RNA, ATP
Often found in phosphate groups (PO4 3-).
~attached to many bio molecules
In DNA, RNA, ATP energy stored in between bonds between them.
Found in phospholipids which form phospholipid bilayer