Cell Boundaries Part 2

What happens when we reach equilibrium? ,[object Object]

Problems for diffusion… ,[object Object],[object Object],[object Object],[object Object],[object Object]

If things can cross a membrane we call the membrane PERMEABLE If things canNOT cross a membrane we call the membrane IMPERMEABLE

Biological membranes are… ,[object Object],[object Object],[object Object],[object Object]

Osmosis ,[object Object],[object Object],[object Object]

How Osmosis works… ,[object Object],[object Object],[object Object],[object Object]

Water moves from areas of HIGH conc. To areas of LOW conc. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Osmotic Pressure ,[object Object],[object Object],[object Object]

How do big molecules diffuse across a membrane so quickly if the membrane is selectively permeable?

Facilitated Diffusion ,[object Object],[object Object],[object Object],[object Object],[object Object]

Facilitated Diffusion (continued) ,[object Object],[object Object],[object Object],[object Object]

What about when we want to go against the concentration? (From low concentration to high?)

What do we need??? ,[object Object]

ACTIVE transport ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Types of Active transport ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Molecular Transport ,[object Object],[object Object],[object Object]

Endocytosis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Two types of endocytosis: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exocytosis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Cell Boundaries Part 2

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Cell Boundaries Part 2