5 Questions
Diffusion is the movement of molecules from a region of lower concentration to a region of higher concentration.
False
Simple diffusion occurs through the lipid or protein layer of the cell membrane.
True
Facilitated diffusion occurs with the help of carrier proteins.
True
Water-soluble substances primarily diffuse through the lipid layer of the cell membrane.
False
Facilitated diffusion is slower than simple diffusion.
False
Study Notes
Diffusion
- Movement of molecules from a region of higher concentration to a region of lower concentration.
- Two types of diffusion: simple diffusion and facilitated diffusion.
Simple Diffusion
- Occurs through the lipid or protein layer of the cell membrane.
- No assistance from carrier proteins is required.
Facilitated Diffusion
- Occurs with the help of carrier proteins.
- Slower than simple diffusion.
Cell Membrane and Diffusion
- Water-soluble substances primarily diffuse through the lipid layer of the cell membrane.
Test your knowledge on the topic of Transport Through Cell Membrane with these 20 multiple-choice questions. Explore concepts such as diffusion, including simple and facilitated diffusion, and understand how molecules move through the cell membrane. Answer correctly and assess your understanding of this important biological process.
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