6 Questions
What is the primary function of membranes in biological systems?
To act as barriers controlling the exchange of materials between the internal and external environment
What is the characteristic of unsaturated fatty acids in phospholipids?
They have kinks in the tail
What is the result of the amphipathic nature of phospholipids?
The hydrophilic head points outwards and the hydrophobic tail points inwards
Which of the following molecules can easily pass through the lipid bilayer?
Oxygen
What is the process by which molecules move down a concentration gradient?
Simple diffusion
What is the direction of oxygen diffusion in the human body?
From the blood to the cells
Test your knowledge of cell membrane structure, including its composition, lipid bilayer, and functions. Learn about phospholipids, glycolipids, sterols, and more!
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