Which process is responsible for moving chlorine ions into the cells of green algae?

The process responsible for moving chlorine ions into the cells of green algae is active transport. This mechanism is essential because it allows the cells to move ions against their concentration gradient, which is necessary when the concentration of chlorine ions is higher inside the cells than outside. Active transport requires energy, typically in the form of ATP, to facilitate the movement of ions through protein pumps in the cell membrane.

In the case of green algae, active transport enables the uptake of essential ions like chlorine, which may not be abundant in the surrounding environment. This uptake is crucial for various cellular functions, including maintaining osmotic balance, conducting photosynthesis, and ensuring proper metabolic processes.

Contrary to active transport, facilitated diffusion and passive transport do not require energy and rely on the natural concentration gradient to move substances. Osmosis specifically refers to the movement of water across a semi-permeable membrane, not ions. Therefore, the role of active transport in efficiently moving chlorine ions into algae cells is paramount for their survival and function.