Multiple Choice
Which statement best explains the function of the cell membrane (lipid bilayer) in living cells?
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8. Membrane Structure
The Lipid Bilayer
Multiple Choice
In animal cells, which molecule is primarily responsible for strengthening the plasma membrane by modulating its fluidity and stability?
A
Ribosomal RNA
B
Glycogen
C
Cholesterol
D
Cellulose
Verified step by step guidance1
Understand the structure of the plasma membrane in animal cells, which is primarily composed of a phospholipid bilayer with embedded proteins.
Recognize that membrane fluidity and stability are crucial for proper cell function, allowing flexibility while maintaining integrity.
Identify the molecule that intercalates between phospholipids in the membrane to modulate its fluidity and stability.
Recall that cholesterol is the key molecule in animal cell membranes that strengthens the membrane by preventing it from becoming too fluid at high temperatures and too rigid at low temperatures.
Conclude that among the options given, cholesterol is the molecule responsible for strengthening the plasma membrane by modulating its fluidity and stability.
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