Question
Carbon dioxide passively diffuses across the cell membrane down its concentration gradient. This means that, overall, the molecules move from an are of higher concentration to an area of lower concentration., An overall directional movement is known as net movement.
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00:0900:13
Complete the paragraph
At the start of the video, there is a concentration of carbon dioxide molecules inside the cell than outside the cell. As carbon dioxide molecules move by simple diffusion, molecules cross the cell membrane in . molecules move from inside the cell to the outside, until the concentration outside the cell is the concentration inside the cell. Overall, the video shows that the net movement of carbon dioxide is its concentration gradient.
Video Player
00:0900:13
Complete the paragraph
At the start of the video, there is a concentration of carbon dioxide molecules inside the cell than outside the cell. As carbon dioxide molecules move by simple diffusion, molecules cross the cell membrane in . molecules move from inside the cell to the outside, until the concentration outside the cell is the concentration inside the cell. Overall, the video shows that the net movement of carbon dioxide is its concentration gradient.
Answers
GPT-4o mini
At the start of the video, there is a **higher** concentration of carbon dioxide molecules inside the cell than outside the cell. As carbon dioxide molecules move by simple diffusion, molecules cross the cell membrane in **both directions.** **However,** more molecules move from inside the cell to the outside, until the concentration outside the cell is **equal to** the concentration inside the cell. Overall, the video shows that the net movement of carbon dioxide is **down** its concentration gradient.