10 Questions
What is the main function of the plasma membrane?
Exhibiting selective permeability
What are the main macromolecules in cellular membranes?
Lipids and proteins
What type of molecules are phospholipids?
Amphipathic
Where do most membrane proteins reside?
In the bilayer with their hydrophilic portions protruding
What allows some substances to cross the plasma membrane more easily than others?
The selective permeability of the plasma membrane
Cell membranes are impermeable and do not allow any substances to cross them.
False
The structure of plasma membrane is not influenced by the fluidity of membranes.
False
Passive transport does not require energy input from the cell.
True
Osmosis has no effect on water balance within the cell.
False
Most membrane proteins are amphipathic and reside in the bilayer with their hydrophobic portions protruding.
True
Test your knowledge on the transport processes across cell membranes with this quiz based on Bio 206 (Biology for Engineers) lecture by Dr. Fatma Alshehri. The quiz covers topics such as the structure of the plasma membrane, selective permeability, passive transport, osmosis, and active transport.
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