Question

which of the following is true of passive transport? multiple choice it uses the cell wall it requires a gradient it only moves water it includes endocytosis

Explanation:

• "It uses the cell wall": Passive transport (like diffusion, osmosis) doesn’t use the cell wall; the cell wall is structural, not involved in transport mechanics. Eliminate this.
• "It requires a gradient": Passive transport (e.g., diffusion, osmosis) moves substances down their concentration/electrochemical gradient (from high to low concentration) without energy. This matches.
• "It only moves water": Passive transport includes moving other molecules (e.g., oxygen, carbon dioxide in diffusion), not just water. Eliminate.
• "It includes endocytosis": Endocytosis is active transport (requires energy to bring substances into the cell). Passive transport does not include active processes like endocytosis. Eliminate.

Answer:

B. It requires a gradient (assuming the second option is labeled B; if options are unlabeled, the option with "It requires a gradient")