LIFE SCIENCE

Detailed explanation-1: -It is a passive transport and doesn’t require any energy. It is also a passive transport mechanism that doesn’t require any energy, but some facilitated diffusion processes can be active. The speed of simple diffusion is low. The speed of facilitated diffusion is high.

Detailed explanation-2: -Diffusion is a passive process which means it does not require energy. Small particles diffuse faster than large ones. Eg substances like oxygen, carbon dioxide and glucose move in and out of cells by diffusion. The greater the difference in concentration, the faster the rate of diffusion.

Detailed explanation-3: -Both active transport and facilitated diffusion do use proteins to assist in transport. However, active transport works against the concentration gradient, moving substances from areas of low concentration to areas of high concentration. In addition, the types of proteins that they use are different.

Detailed explanation-4: -Simple passive diffusion occurs when small molecules pass through the lipid bilayer of a cell membrane. Facilitated diffusion depends on carrier proteins imbedded in the membrane to allow specific substances to pass through, that might not be able to diffuse through the cell membrane.