関連ワード:  what is active transport in the body    what is active transport in the human body    what is active transport in the cell membrane    what is active transport in the cell    what is an example of active transport in the body    what does active transport do in the body    what is responsible for active transport in the cell membrane    what is active transport in a cell example    what is an example of active transport in the human body    what is the significance of active transport in the human body