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Cellular Transport. Elena Eckert. Passive Transport- Osmosis. In osmosis water molecules move across a permeable membrane. They move from high concentration to low concentration. It doesn’t use energy from the cell. Osmosis Video. Important to Plant Cells- Osmosis.

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Cellular transport

Cellular Transport

Elena Eckert


Passive transport osmosis
Passive Transport- Osmosis

In osmosis water molecules move across a permeable membrane.

They move from high concentration to low concentration.

It doesn’t use energy from the cell.



Important to plant cells osmosis
Important to Plant Cells- Osmosis

Osmosis is important to plant cells because it helps the plant leaves to swell and become turgid.

The cell wall keeps it from bursting.

When they become turgid it helps the green parts of the plant to stand up in the sunlight to go through photosynthesis.


Active transport exocytosis
Active Transport- Exocytosis

Active transport is when molecules move against the concentration gradient.

This uses energy from the cell.

Exocytosis is when it pushes the molecules out of the cell.


Exocytosis diagram
Exocytosis Diagram

Outside of cell

Inside of cell

Molecules


Important to plant cells exocytosis
Important to Plant Cells- Exocytosis

A new plasma membrane is delivered.

Polysaccharides are delivered.


Websites
Websites

http://www.purchon.com/biology/osmosis.htm

http://jxb.oxfordjournals.org/content/47/6/717


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