Question

1. the movement of molecules from an area of high concentration to low concentration________ without energy is being demonstrated by the diagram below. 5. using a transport protein to move particles across the membrane from high concentration to low without energy:________ 7. describe the processes occurring in the following pictures:

Explanation:

1. Diffusion is the movement of molecules from an area of high concentration to low concentration without energy input.
2. Facilitated diffusion uses a transport protein to move particles across the membrane from high to low concentration without energy.

7.

• The first picture shows phagocytosis, where a cell engulfs a particle.
• The second picture likely shows simple diffusion across a membrane (molecules moving from high to low concentration).
• The third picture shows active transport, as it moves particles against the concentration gradient (from low to high concentration) which requires energy.

Answer:

1. Diffusion
2. Facilitated diffusion
3. Phagocytosis; Simple diffusion; Active transport