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Active Transport

A presentation on cellular active transport, ATP, the role of ATP and what is being actively transported
by

Nick Schluter

on 19 December 2013

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Transcript of Active Transport

The Transport Protein used to transfer Sodium and Potassium Ions from low to high concentration gradient is called a Sodium-Potassium pump
3 Sodium Ions attach to the pump
Pump breaks down a molecule of ATP
When ATP attaches an enzyme breaks the covalent bond on one of the phosphates which attaches to the pump
This phosphate gives enough energy to change the shape of the pump to open outward and release the 3 sodium ions

Active Transport
The passage of materials against a concentration gradient
Based on Jim Harvey's speech structures
Process
Intro
Active transport tranfers Sodium and Potassium Ions across the cell membrane
Naturally Sodium and Potassium Ions will want to go from a high to a low gradient but active transport does the opposite
Moving something in the opposite direction of its concentration gradient requires a lot of energy
Adenosine Triphosphate
ATP is the standard cellular energy unit
Used in opening chemical pumps
When used becomes Adenosine Diphosphate (ADP)
P
P
P
A
P
P
A
Example
ADP is remade into ATP in mitochondria
P
P
A
P
P
A
Mitochondria
P
Then 2 Potassium Ions attach to the pump
As the pump loses it's energy it relaxes and lets the Potassium Ions in
Full transcript