Active Transport

Luke Marney
Mind Map by , created over 5 years ago

Explains active transport. A little harder to grasp than diffusion.

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Luke Marney
Created by Luke Marney over 5 years ago
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Active Transport
1 Unlike Diffusion

Attachments:

1.1 Diffusion = High concentration to low concentration
1.1.1 Along a concentration gradient
1.2 Low concentration to high concentration
1.2.1 Against a concentration gradient
2 Used to transport dissolved molecules from a low concentration to a high concentration
2.1 Against the concentration gradient
3 Requires energy from respiration
4 Protein carriers
4.1 Responsible for carrying specific molecules through a cell membrane into a cell
4.2 Binding site, allows molecules to bind to outside of membrane
4.3 Energy from respiration changes the shape of the protein
4.3.1 Releases the substance onto the other side of the membrane
5 Examples from nature:
5.1 Root hair cells
5.1.1 Need to absorb ions (like nitrates) from soil for nutrients
5.2 Small intestine villi cells
5.2.1 Alongside diffusion, maximises absorption of glucose and other substances

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