Inorganic Ion
- Created by: iloverevision:)
- Created on: 06-03-19 12:42
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- Inorganic Ions
- What are ions?
- atom or group of atoms that has an electrical charge
- an ion with a positive charge is called a cation
- atom or group of atoms that has an electrical charge
- What is an inorganic ion?
- does not contain carbon (few exceptions)
- in solution, in cytoplasm of cells & in bodily fluid of organisms
- each has specific role depending on its properties
- role determines whether it is found in high or low concentrations
- Iron ions in haemoglobin
- haemoglobin - large protein that carries oxygen around body in red blood cells
- made up of 4 different polypeptide chains - each with an iron ion at centre (Fe 2 +)
- the iron ion is what binds to oxygen in haemoglobin
- when oxygen is bound - Fe 2+ ion temporarily becomes an Fe 3+ ion - until oxygen is released
- the iron ion is what binds to oxygen in haemoglobin
- made up of 4 different polypeptide chains - each with an iron ion at centre (Fe 2 +)
- haemoglobin - large protein that carries oxygen around body in red blood cells
- Hydrogen ions
- pH is calculated based on concentration of H+ ions in environment
- the more H+ present the lower the pH & more acidic the environment
- enzyme-controlled reactions are all affected by pH
- pH is calculated based on concentration of H+ ions in environment
- Sodium ions
- glucose & amino acids need a bit of help crossing cell membranes
- a molecule of glucose or an amino acid can be transported into a cell across cell-surface membranes alongside sodium ions
- known as co-transport
- a molecule of glucose or an amino acid can be transported into a cell across cell-surface membranes alongside sodium ions
- glucose & amino acids need a bit of help crossing cell membranes
- Phosphate ions
- when a phosphate ion is attached to another molecule, it is known as a phosphate group
- DNA, RNA & ATP all contain phosphate groups
- its the bonds between phosphate groups that store energy in ATP
- when a phosphate ion is attached to another molecule, it is known as a phosphate group
- What are ions?
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