
Cell Membrane Transport Mechanisms

Interactive Video
•

Amelia Wright
•
Biology, Science
•
7th - 10th Grade
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Hard
01:50
9 questions
Show answers
1.
Multiple Choice
What is the main challenge faced by the cell in moving molecules across the membrane?
Molecules can easily pass through the membrane.
Molecules cannot pass through the membrane or do so slowly.
The cell membrane is too thick.
The cell does not need to move molecules.
2.
Multiple Choice
What is the direction of movement for molecules in facilitated diffusion?
In random directions.
From high to low concentration.
There is no movement.
From low to high concentration.
3.
Multiple Choice
Which molecules require facilitated diffusion to enter the cell?
Only ions.
Only glucose.
Glucose, ions, and polar molecules like water.
Only water.
4.
Multiple Choice
What is the role of proteins in facilitated diffusion?
They dissolve the cell membrane.
They block molecules from entering the cell.
They speed up the movement of molecules randomly.
They provide an alternate route for molecules to enter the cell.
5.
Multiple Choice
How do most water molecules enter and exit the cell?
Through simple diffusion only.
Through aquaporins.
By being absorbed by the cell wall.
They do not enter or exit the cell.
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