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Active Transport

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Active Transport

• the movement of materials against the concentration gradient

• requires cellular energy (ATP)

Page 4: SBI4U - ActiveTransport Student · electrochemical gradient. Secondary Active Transport • uses gradient established by a ... Diffusion Osmosis Facilitative diffusion Active Transport

Primary Active Transport• pumps move

positively charged ions (H+, Ca2+, Na+, K+) across membranes

• creates electrochemical gradient

Secondary Active Transport• uses gradient

established by a primary active transport pump to power a second pump.

Bulk Transport• movement of larger substances across a

cellular membrane • requires energy (ATP) • endocytosis vs exocytosis

Membrane removed Membrane added

Page 7: SBI4U - ActiveTransport Student · electrochemical gradient. Secondary Active Transport • uses gradient established by a ... Diffusion Osmosis Facilitative diffusion Active Transport

Pinocytosis= Cell Drinking •membrane collapses inward

Phagocytosis= cell bulk eating •Using pseudopods

Receptor Mediated •receptors are filled before the vacuole forms

Page 8: SBI4U - ActiveTransport Student · electrochemical gradient. Secondary Active Transport • uses gradient established by a ... Diffusion Osmosis Facilitative diffusion Active Transport

Exocytosis

•Packages are generally made in the golgi apparatus. •The removal of cell products or waste

Page 9: SBI4U - ActiveTransport Student · electrochemical gradient. Secondary Active Transport • uses gradient established by a ... Diffusion Osmosis Facilitative diffusion Active Transport

Transport Method

With/ Against the gradient

Energy required

How it Works In/Out

Diffusion

Osmosis

Facilitative diffusion

Active Transport Pump

Pinocytosis

Phagocytosis

Receptor Mediated

Exocytosis

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