Question

Both simple diffusion and facilitated diffusion.

• A. Transport molecules only along the concentration gradient and do not use energy
• B. Transport molecules only along the concentration gradient by the use of energy
• C. Transport molecules against the concentration gradient and do not use energy
• D. Transport molecules against the concentration gradient by the use of energy

Answer 1

The correct option is A Transport molecules only along the concentration gradient and do not use energy

Answer A: Transport molecules only the concentration gradient and do not use energy.

1. Both move from a region of high concentration to a region of low concentration through a partially permeable membrane.
2. Both are passive processes (do not require energy).