Questions and Answers
What process describes the movement of molecules from an area of high concentration to an area of low concentration?
Facilitated Diffusion
Which type of ion channels open or close when the ionic charge across the membrane changes?
Voltage-gated ion channels
What is the main characteristic of endocytosis?
Ingestion of materials by cells
Which process requires energy (ATP) to transport molecules against the concentration gradient?
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What is the process by which water diffuses across a selectively permeable membrane?
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Which process involves the transporter protein binding to the substrate on one side of the plasma membrane and changing shape to release it on the other side?
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What type of ion channels require a signal to open or close them?
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Which method involves cells ingesting materials as a method of feeding by single-celled organisms?
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What happens when signaling molecules bind to a binding site on transmembrane proteins?
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'Cell eating' is another term used for which process?
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