5 Questions
What is the main driving force behind diffusion?
Concentration gradient
In simple diffusion, what factors determine the rate of movement of substances across the membrane?
Molecular size, concentration gradient, and lipid solubility
What type of transport requires the use of energy to move substances across the membrane?
Active transport
What happens to the rate of diffusion when the concentration gradient is increased?
Diffusion speeds up
Which molecules can pass directly through the phospholipid bilayer in simple diffusion?
Lipid-soluble molecules like CO2 and O2
Test your knowledge on membrane structure, function, and diffusion processes such as the movement of molecules from areas of high to low concentration. Explore topics like passive transport, simple diffusion, and the types of movement across membranes.
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