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What is the term for the movement of materials against a concentration difference?
What is the term for the movement of materials against a concentration difference?
Active transport
How are small molecules and ions typically transported across a cell membrane?
How are small molecules and ions typically transported across a cell membrane?
By transport proteins acting as pumps
What are the two processes involved in the active transport of larger molecules and clumps of material?
What are the two processes involved in the active transport of larger molecules and clumps of material?
Endocytosis and exocytosis
What do cells use protein pumps to transport across cell membranes?
What do cells use protein pumps to transport across cell membranes?
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What type of transport involves changes in the shape of the cell membrane for moving larger materials?
What type of transport involves changes in the shape of the cell membrane for moving larger materials?
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