1.8 Inorganic ions Flashcards
1
Q
What is an ion?
A
A charged particle
2
Q
Ions that have gained electrons are …
A
Negatively charged –> anions.
3
Q
Ions that have lost electrons are…
A
Positively charged —> cations
4
Q
Where are phosphate ions found?
A
- Kidney
- Stomach
- Phospholipids + ATP
5
Q
Function of phosphate ions:
A
- Component of DNA and RNA.
- Component of energy carrying coenzymes.
- Increases rigidity of bones, teeth and cartilage.
- Component of phospholipids, ATP and nucleic acids.
6
Q
Where are magnesium ions found?
A
- Chlorophyll.
- Cell walls.
7
Q
Function of magnesium ions:
A
- Regulation of blood pH.
- Component of chlorophyll.
- Component of cell walls.
- Cofactor for some enzymes.
8
Q
Where are calcium ions found?
A
- Bones and teeth.
- Cell walls.
- Cell membranes.
9
Q
Function of calcium ions:
A
- Increase rigidity of bone, teeth and cartilage.
- Used for blood clotting and muscle contractions.
- Regulates permeability of cell membranes.
- Cofactor for some enzymes.
10
Q
Where are nitrate ions found?
A
- Amino acids.
- DNA.
- Vitamins.
- Chlorophyll.
11
Q
Function of nitrate ions:
A
- Part of amino acids- Component of nucleic acids.
- Some hormones are made of proteins that contain nitrogen.
12
Q
Where are iron ions found?
A
- red blood cells.
13
Q
Function of iron ions?
A
- forms haemoglobin.
- Myoglobin - holds O2 in muscles.
- Cofactor for peroxidase enzymes.
14
Q
Hydrogen ions
A
determines PH of solution
protein shape and function
15
Q
ions occur in solution in..
A
cytoplasm, tissue fluid, blood plasma
