The formation of hydrogencarbonate ions
- Created by: Rebecca Rubie
- Created on: 02-02-14 12:28
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- Formation of hydrogencarbonate ions
- 1. as carbon dioxide DIFFUSES into the blood, some of it enters the RED BLOOD CELLS
- 2. from here, the carbon dioxide combines with water to form a weak acid called CARBONIC ACID
- 3.This is then CATALYSED by an enzyme called CARBONIC ANHYDRASE
- 4. the CARBONIC ACID dissociates to release HYDROGEN IONS (H+) and HYDROGENCARBONATE IONS (HC03-)
- 5.the HYDRO CARBONATE Ions DIFFUSE out of the RED BLOOD CELL and into the PLASMA
- 6.Charge inside the RED BLOOD CELL is MAINTAINED by the movement of CHLORIDE IONS (CL-) from the PLASMA into the RED BLOOD CELL
- 5.the HYDRO CARBONATE Ions DIFFUSE out of the RED BLOOD CELL and into the PLASMA
- 4. the CARBONIC ACID dissociates to release HYDROGEN IONS (H+) and HYDROGENCARBONATE IONS (HC03-)
- 3.This is then CATALYSED by an enzyme called CARBONIC ANHYDRASE
- 2. from here, the carbon dioxide combines with water to form a weak acid called CARBONIC ACID
- 1. as carbon dioxide DIFFUSES into the blood, some of it enters the RED BLOOD CELLS
- 2. from here, the carbon dioxide combines with water to form a weak acid called CARBONIC ACID
- 3.This is then CATALYSED by an enzyme called CARBONIC ANHYDRASE
- 4. the CARBONIC ACID dissociates to release HYDROGEN IONS (H+) and HYDROGENCARBONATE IONS (HC03-)
- 5.the HYDRO CARBONATE Ions DIFFUSE out of the RED BLOOD CELL and into the PLASMA
- 6.Charge inside the RED BLOOD CELL is MAINTAINED by the movement of CHLORIDE IONS (CL-) from the PLASMA into the RED BLOOD CELL
- 5.the HYDRO CARBONATE Ions DIFFUSE out of the RED BLOOD CELL and into the PLASMA
- 4. the CARBONIC ACID dissociates to release HYDROGEN IONS (H+) and HYDROGENCARBONATE IONS (HC03-)
- 3.This is then CATALYSED by an enzyme called CARBONIC ANHYDRASE
- CHLORIDE SHIFT
- Hydrogen ions = very ACIDIC contents of red blood cell
- HIGH ACIDITY IS PREVENTED BY: hydrogen ions being taken up by HAEMOGLOBIN to produce:
- HAEMOGLOBINIC ACID
- HAEMOGLOBIN acts as a BUFFER (a compound that can maintain a constant pH
- Hydrogen ions = very ACIDIC contents of red blood cell
- HAEMOGLOBINIC ACID
- HAEMOGLOBIN acts as a BUFFER (a compound that can maintain a constant pH
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