IB Biology B2.1 Definitions
This page contains our IB Biology definitions for B2.1. By learning each one of these definitions, you will fully cover the content for IB Biology 'Further membranes and transport'.
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absorption
The process of taking substances into cells and blood
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antiporter
An active transport protein that transports two molecules in opposite directions
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endocytosis
Invagination of the plasma membrane around substances to form a vesicle that transports substances into the cell
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exocytosis
Release of substances into the extra-cellular matrix through fusion of vesicles with the plasma membrane
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voltage-gated channel
A channel whose state is dependent on the axon charge
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