Transport in cells

In this section (IB Topic 1.4 )

- Mechanisms of transport

- Internal membrane system and vesicle traffic

- Osmosis

1.4_vocabulary.pdf

1.4_Crossword

Answers here.

Dr. Pena's summary sheet

Movement_through_cell_membranes_SL_Bio

Simple diffusion, facilitated diffusion and active transport

Transport_Membranes.webm

See this great virtual animation.

Vesicular transport: endocytosis and exocytosis

Vesicle tranport: exocytosis

Nobel Prize 2013: Vesicles and vesicular transport

The Nobel Prize in Physiology and Medicine 2013 was awarded to Drs Randy Schekman, James E Rothman and Thomas C Südhof for their 'discoveries of machinery regulating vesicle traffic, a major transport system in our cells. Read from fission to fusion.

Prize announcementPrize announcement

Osmosis

Osmotic_Dehydration_PearPieces.pdf

Answers here.

Plasmolysis in onion cells

Big idea of osmosis: water follows solutes

The Process of Diffusion OsmosisWhat happens if a drop of red dye is added to water? The process of osmosis starts and it spreads into the water. The process of diffusion osmosis is shown here.

The Process of Diffusion and OsmosisThis video shows some activities to make you understand the topic of diffusion and the osmosis. A brief description for these process is provided here.

Membrane transport in neurons: Voltage gated channels and Na/K pump

Vacuoles-Vesicles - Biology Video by BrightstormTime-saving video description of vacuoles and vesicles. Vacuoles and vesicles are very important parts of a cell and found only in eukaryotic cells.

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