Question

which of the following statements correctly states the process shown in the diagram?
the process labeled 3 shows how cells use atp to facilitate the active transport of molecules against the concentration gradent
the process labeled 2 shows how cells move molecules against the concentration gradient without needing high energy molecules
all three processes show how molecules freely move in and out of the cell regardless of the concentration gradient or available energy
the process labeled 1 shows how cells can easily move molecules with the concentration gradient using high energy molecules

Explanation:

• Process 1: Facilitated diffusion (passive transport, no ATP, down concentration gradient).
• Process 2: Facilitated diffusion (passive transport, no ATP, down concentration gradient).
• Process 3: Active transport (uses ATP, moves against concentration gradient).

Answer:

The process labeled 3 shows how cells use ATP to facilitate the active transport of molecules against the concentration gradient.