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Active transport.

Published byBambang Lesmana Modified over 5 years ago

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Presentation on theme: "Active transport."— Presentation transcript:

1 Active transport

2 Active Transport Defined: Molecules move from a LOW to a HIGH concentration ATP energy needed to fight diffusion ATP = Adenosine Triphosphate ATP activates pumps (see animation)

3 Contractile vacuole of a Paramecium
As water enters this cell by diffusion, it is immediately pumped out to prevent bursting

4 Endocytosis Endocytosis: Process in which the plasma membrane takes in substances (2 types) 1) Phagocytosis: when a cell engulfs a solid particle 2) Pinocytosis: when a cell engulfs a liquid particle Unfortunately, viruses can also enter our cells this way

5 Endocytosis & the lysosome
The bacteria is engulfed by phagocytosis The bacteria is placed inside a lysosome are destroyed

6 Exocytosis Defined: Process when substances are expelled from the cell
Proteins, nutrients, and waste exit by exocytosis Vesicle carry & release objects through the plasma membrane

7 Kobe Kuiz How area active and passive transport different?
Which molecule powers active transport? How are endo- and exocytosis similar? Different? Which cell part controls active transport?

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