Question

organisms that live at low ph (acidophiles) have to maintain a homeostasis of a ph - neutral cytoplasm by moving protons from the inside of the cell to the outside of the cell, where there is already a high concentration of protons. which of the following types of transport are these acidophilic organisms likely to use? active transport facilitated diffusion osmosis simple diffusion

Explanation:

Active transport moves substances against their concentration gradient, which is the case here as protons are moved from an area of lower concentration (inside the cell) to an area of higher concentration (outside the cell). Facilitated diffusion and simple diffusion move substances down their concentration gradient, and osmosis is the movement of water.

Answer:

active transport