Basic explanation:
* Active transport is the process by which cells move molecules across their membranes against their concentration gradient, requiring energy.
In a biological context:
* The sodium-potassium pump is a prime example of active transport, essential for nerve impulse transmission.
* Plants use active transport to absorb nutrients from the soil, even when their concentration is lower than in the plant cells.
* Active transport plays a crucial role in maintaining the cell's internal environment by regulating the movement of ions and other essential molecules.
In a more general context:
* The company uses active transport methods to deliver packages quickly and efficiently to remote areas.
* The athlete's body relies on active transport to deliver oxygen to muscle cells during intense exercise.
In a metaphorical context:
* The artist uses active transport to move the viewer through the layers of meaning in their artwork.
* The entrepreneur's success is a testament to their active transport of ideas and resources.
Remember to choose the sentence structure and context that best fits your intended meaning.