SBI4U Molecular Genetics Review Explain the significance of this experiment.
SBI4U -...
Transcript of SBI4U -...
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Active Transport
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Active Transport
• the movement of materials against the concentration gradient
• requires cellular energy (ATP)
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Primary Active Transport• pumps move
positively charged ions (H+, Ca2+, Na+, K+) across membranes
• creates electrochemical gradient
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Secondary Active Transport• uses gradient
established by a primary active transport pump to power asecond pump.
• (co-transport-see website animations)
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Bulk Transport• movement of larger substances across a
cellular membrane • requires energy (ATP) • endocytosis vs exocytosis
Membrane removed Membrane added
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Pinocytosis= Cell Drinking •membrane collapses inward
Phagocytosis= cell bulk eating •Using pseudopods
Receptor Mediated •receptors are filled before the vacuole forms
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Exocytosis
•Packages are generally made in the golgi apparatus. •The removal of cell products or waste
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•With a partner, analyze the cellular scenario provided.
•Discuss the type of transport in each situation.
•What is the cell doing in each situations?
•Discuss what type of particles that could be represented by each letter.
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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