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Unit: Membranes and transport

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The plasma membrane

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Fluid mosaic model of cell membranes
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Structure of the plasma membrane
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Diffusion and osmosis

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Diffusion - Introduction
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Concentration gradients
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Osmosis
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Hypotonic, isotonic, and hypertonic solutions (tonicity)
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Osmosis and tonicity
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Diffusion and osmosis
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Practice
Diffusion, osmosis, and tonicityGet 3 of 4 questions to level up!

Passive transport

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Passive transport and selective permeability
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Facilitated diffusion
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Diffusion and passive transport
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Practice
Passive transportGet 3 of 4 questions to level up!

Quiz 1

Level up on the above skills and collect up to 200 Mastery points

Active transport

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Sodium potassium pump
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Electrochemical gradients and secondary active transport
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Uniporters, symporters and antiporters
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Active transport
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Practice
Active transportGet 3 of 4 questions to level up!

Bulk transport

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Endocytosis, phagocytosis, and pinocytosis
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Exocytosis
(Opens a modal)
Bulk transport
(Opens a modal)
Practice
Bulk transportGet 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 200 Mastery points
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Unit test

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About this unit

This unit is part of the Biology library. Browse videos, articles, and exercises by topic.
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