3.1.8 Inorganic ions Flashcards
1
Q
Where are inorganic ions found in organisms?
A
- In solution in the cytoplasm
- Body fluids of organisms
in a mixture of concentrations
2
Q
What does each ion have?
A
A specific function, depending on its properties
3
Q
Examples of ions
A
- Iron ions
- Phosphate ions
- Hydrogen ions
- Sodium ions
4
Q
Examples of ions: iron
A
in haemoglobin, which transports oxygen
5
Q
Examples of ions: phosphate ions
A
- joins nucleotides with phosphodiester bonds
- used to produce ATP
- phosphorylates other compounds making them more reactive
- hydrophilic part of phospholipid bilayer
6
Q
Examples of ions: hydrogen ions
A
determine pH of solutions, therefore enzyme function
7
Q
Examples of ions: sodium ions
A
co-transport of glucose/amino acids because sodium moves out by active transport. This creates a sodium concentration gradient, which affects osmosis
